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प्रश्न
Give an example of a chemical reaction for the following situation:
A change in colour is observed
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उत्तर
Reaction between copper sulphate and iron metal – blue solution of copper sulphate changes to the green solution of ferrous sulphate.
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
light.
Write the missing reactants and products and balance the equations.
................+ HCI `→` NaCI + `"H"_2"O"` + .........................
FILL IN THE BLANK
Positively charged ions are called ........
Define electrolysis.
Copper carbonate when heated, it turns :
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 + Cu
Complete the following table and write your observations.
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Hydrogen sulphide |
Ammonia |
Sulphur dioxide |
Hydrogen chloride |
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Shake the gas with red litmus solution |
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Shake the gas with blue litmus solution |
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Apply a burning splint to a gas |
Burning of paper is the best example of ______ change.
Write some materials prepared by chemical changes.
The reaction of H2 gas with oxygen gas to form water is an example of ______.
