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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (26).mp3 | Observe the colour of the silver chloride after some time. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (27).mp3 | You will see that white silver chloride turns grey in sunlight. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (28).mp3 | This is Silver chloride turns grey due to the decomposition of silver chloride into silver and chlorine by in sunlight to form silver metal light. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (29).mp3 | Silver bromide also behaves in the same way. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (3).mp3 | Heating of lead nitrate and these fumes are of nitrogen dioxide. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (30).mp3 | The above reactions are used in black and white photography. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (31).mp3 | What form of energy is causing these decomposition reactions? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (32).mp3 | We have seen that the decomposition reactions require energy either in the form of heat, light or electricity for breaking down the reactants. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (33).mp3 | Reactions in which energy is absorbed are known as endothermic reactions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (34).mp3 | Carry out the following Activity. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (35).mp3 | Take about 2 g barium hydroxide in a test tube. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (36).mp3 | Add 1 g of ammonium chloride and mix with the help of a glass rod. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (37).mp3 | Touch the bottom of the test tube with your palm. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (38).mp3 | What do you feel? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (39).mp3 | Is this an exothermic or endothermic reaction? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (4).mp3 | The emission of nitrogen dioxide reaction that takes place. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (40).mp3 | QUESTIONS ? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (41).mp3 | A solution of a substance ‘X’ is used for white washing. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (42).mp3 | Name the substance ‘X’ and write its formula. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (43).mp3 | Write the reaction of the substance ‘X’ with water. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (44).mp3 | Why is the amount of gas collected in one of the test tubes double of the amount collected in the other. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (45).mp3 | Name this gas. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (5).mp3 | Let us perform some more decomposition reactions | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (6).mp3 | Take a plastic mug. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (7).mp3 | Drill two holes at its base and fit rubber stoppers in these holes. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (8).mp3 | Insert carbon electrodes in these rubber stoppers. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 152-197 (9).mp3 | Connect these electrodes to a 6 volt battery. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 198.mp3 | Displacement Reaction | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (1).mp3 | Take three iron nails and clean them by rubbing with sand paper. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (10).mp3 | Iron nails and copper sulphate solutions compared before and after the experiment. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (11).mp3 | Why does the iron nail become brownish in colour and the blue colour of copper sulphate solution fade? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (12).mp3 | In this reaction, iron has displaced or removed another element, copper, from copper sulphate solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (13).mp3 | This reaction is known as displacement reaction. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (14).mp3 | Zinc and lead are more reactive elements than copper. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (15).mp3 | They displace copper from its compounds. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (16).mp3 | Double Displacement Reaction | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (17).mp3 | Take about 3 mL of sodium sulphate solution in a test tube. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (18).mp3 | In another test tube, take about 3 mL of barium chloride solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (19).mp3 | Mix the two solutions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (2).mp3 | Take two test tubes marked as (A) and (B). | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (20).mp3 | What do you observe? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (21).mp3 | You will observe that a white substance, which is insoluble in water, is formed. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (22).mp3 | This insoluble substance formed is known as a precipitate. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (23).mp3 | Any reaction that produces a precipitate can be called a precipitation reaction. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (24).mp3 | Formation of barium sulphate and sodium | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (25).mp3 | What causes this. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (26).mp3 | The white precipitate of BaSO4 is formed by the 2+ reaction of SO2–4 and Ba . | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (27).mp3 | The other product formed is sodium chloride which remains in the solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (28).mp3 | Such reactions in which there is an exchange of ions between the reactants are called double displacement reactions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (29).mp3 | Recall where you have mixed the solutions of lead nitrate and potassium iodide. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (3).mp3 | In each test tube, take about 10 mL copper sulphate solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (30).mp3 | What was the colour of the precipitate formed. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (31).mp3 | Can you name the compound precipitated? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (32).mp3 | Write the balanced chemical equation for this reaction. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (33).mp3 | Is this also a double displacement reaction? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (34).mp3 | Oxidation and Reduction | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (35).mp3 | Heat a china dish containing about 1 g copper powder | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (36).mp3 | What do you observe? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (37).mp3 | The surface of copper powder becomes coated with black copper oxide. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (38).mp3 | Why has this black substance formed? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (39).mp3 | This is because oxygen is added to copper and copper oxide is formed. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (4).mp3 | Tie two iron nails with a thread and immerse them carefully in the copper sulphate solution in test tube B for about 20 minutes | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (40).mp3 | If hydrogen gas is passed over this heated material (CuO), the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (5).mp3 | Keep one iron nail aside for comparison. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (6).mp3 | After 20 minutes, take out the iron nails from the copper sulphate solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (7).mp3 | Compare the intensity of the blue colour of copper sulphate solutions in test tubes (A) and (B). | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (8).mp3 | Also, compare the colour of the iron nails dipped in the copper sulphate solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 199-238 (9).mp3 | Iron nails dipped in copper sulphate solution with the one kept aside. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (1).mp3 | If a substance gains oxygen during a reaction, it is said to be oxidised. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (10).mp3 | HAVE YOU OBSERVED THE EFFECTS OF OXIDATION REACTIONS IN EVERYDAY LIFE? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (11).mp3 | Corrosion | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (12).mp3 | You must have observed that iron articles are shiny when new, but get coated with a reddish brown powder when left for some time. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (13).mp3 | This process is commonly known as rusting of iron. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (14).mp3 | Some other metals also get tarnished in this manner. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (15).mp3 | Have you noticed the colour of the coating formed on copper and silver. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (16).mp3 | When a metal is attacked by substances around it such as moisture, acids, etc., it is said to corrode and this process is called corrosion. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (17).mp3 | The black coating on silver and the green coating on copper are other examples of corrosion. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (18).mp3 | Corrosion causes damage to car bodies, bridges, iron railings, ships and to all objects made of metals, specially those of iron. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (19).mp3 | Corrosion of iron is a serious problem. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (2).mp3 | During this reaction the copper oxide is losing oxygen and is being reduced. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (20).mp3 | Every year an enormous amount of money is spent to replace damaged iron. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (21).mp3 | Rancidity | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (22).mp3 | Have you ever tasted or smelt the fat/oil containing food materials left for a long time? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (23).mp3 | When fats and oils are oxidised, they become rancid and their smell and taste change. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (24).mp3 | Usually substances which prevent oxidation are added to foods containing fats and oil. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (25).mp3 | Keeping food in air tight containers helps to slow down oxidation. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (26).mp3 | Do you know that? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (27).mp3 | Chips manufacturers usually flush bags of chips with gas such as nitrogen to prevent the chips from getting oxidised ? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (28).mp3 | Why does the colour of copper sulphate solution change when an iron nail is dipped in it? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (29).mp3 | What you have learnt? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (3).mp3 | The hydrogen is gaining oxygen and is being oxidised. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (30).mp3 | A complete chemical equation represents the reactants, products and their physical states symbolically. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (31).mp3 | A chemical equation is balanced so that the numbers of atoms of each type involved in a chemical reaction are the same on the reactant and product sides of the equation. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (32).mp3 | Equations must always be balanced. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (4).mp3 | In other words, one reactant gets oxidised while the other gets reduced | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (5).mp3 | during a reaction. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (6).mp3 | Such reactions are called oxidation-reduction reactions or redox reactions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (7).mp3 | If a substance loses oxygen or gains hydrogen during a reaction, it is reduced. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (8).mp3 | Recall where a magnesium ribbon burns with a dazzling flame in air and changes into a white substance, magnesium oxide. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 1 239-270 (9).mp3 | Is magnesium being oxidised or reduced in this reaction? | 5.003 |