Advertisements
Advertisements
Question
Give an example of a chemical reaction for the following situation:
A change in colour is observed
Advertisements
Solution
Reaction between copper sulphate and iron metal – blue solution of copper sulphate changes to the green solution of ferrous sulphate.
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
Melting of ice is a _______ change.
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
Give an example of the following chemical changes.
A reaction where colour change is noticed.
Distinguish by heating the following in dry test tubs.
Zinc nitrate and copper nitrate.
Name the following:
The products obtained during ‘photosynthesis’ – which is a chemical change.
Complete the statement by filling in the blank with the correct word:
The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Ammonium dichromate.
Can a nickel spatula be used to stir copper sulphate solution? Justify your answer.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Can you change rust back into iron by some simple method?
Write the equation for the process of formation of rust.
