Question

(c) Give two examples for each of the above two changes.​

Answer 1

Answer:

1) physical change 2) chemical change

Explanation:

examples

physical change :-

•Crushing a can.

•Melting an ice cube.

•Boiling water.

•Mixing sand and water.

•Breaking a glass.

•Dissolving sugar and water.

•Shredding paper.

Chemical changes :-

•Rusting of iron in presence of moisture and oxygen.

•Burning of wood.

•Milk becoming curd.

•Formation of caramel from sugar by heating.

•Baking of cookies and cakes.

•Cooking any food.

•Acid-base reaction.

•Digestion of food.

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Answer 2

–asin(ωt + kx)