Which of the following is chemical change? Justify.
1. rusting of iron
2. mixing of iron fillings and sand
3. cooking of food
4. freezing of water

Open in App

Solution

1. Rusting of iron and 3. Cooking of food are chemical changes. Reactions take place during these processes which result in the formation of new products. These changes cannot be reversed once they occur.

Suggest Corrections

Similar questions

(a)

(b)

(c)

(d)

(e)

(f)

(g)

Which of the following are physical changes and which are chemical changes?

(a) Burning of a magnesium wire

(b) Freezing of water

(d) Glowing of an electric bulb

Sort the following according to their physical and chemical changes.

(i) Combustion of wood

(ii) Melting of ice.

(iii) Cooking of food.

(iv) Rusting of iron.

(v) Ripening of fruits.

(vi) Tearing of papers.

Join BYJU'S Learning Program