Give two examples for each of the following cases: Physical changes which are reversible. Physical changes which are not reversible. Chemical changes

cbse
cbse-class-7-science
chemical-changes
physcial-and

#1

Give two examples for each of the following cases:

  1. Physical changes which are reversible.
  2. Physical changes which are not reversible.
  3. Chemical changes.

Answer:

  • Folding of paper
  • Melting of ice
  • Tearing of paper
  • Breaking of glass
  • Reaction between vinegar and baking soda
  • Burning of a matchstick