Q. II. Fill in the blanks.
changes.
1. Rusting of iron can be prevented by
2. Changes in which new substances are formed are called
3. Crystallisation is a
change.
4. Copper sulphate is also known as
5. Within our body, food is digested due to
reaction.
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1. Rusting of iron can be prevented by galvanisation or painting.
2. Changes in which new substances are formed are called chemical changes .
3. Crystallisation is a physical change.
4. Copper sulphate is also known as blue vitriol.
5. Within our body, food is digested due to digestive juices .
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