Changes Around Us
1: (d) Reversible, 2: (c) Growth of tree, 3: (b) Reversible, 4: (a) Irreversible, 5 (a) Reversible, 6: (b) Irrversible, 7: (c) Reversible, 8: (d) Reversible, 9: (c) Irreversible, 10: (a) Rversible
“Change is the only permanent thing in life”. Changes keep on happening around us. Some changes are permanent, while some others are temporary. A change in which no new substance is formed is called physical change. Most of the physical changes are reversible in nature. A change in which a new substance is formed is called a chemical change. Most of the chemical changes are irreversible in nature. Growth in plants and animals is an example of chemical change. Similarly, cooking is a chemical change.