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ICSE Class 7 Chemistry Question 13 of 13

Physical and Chemical Changes — Question 13

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13
Question

Question 5i

When we add water to the following substances, which one will show a chemical change?

  1. salt
  2. sugar
  3. oil
  4. quick lime
Answer

quick lime

Reason — Quick lime reacts with water to form calcium hydroxide and a large amount of heat is produced which is a chemical change.