Question

3. Fill in the blanks in the following statements:
(a) When carbon dioxide is passed through lime water, it turns milky
due to the formation of
(b) The chemical name of baking soda is
(c) Two methods by which rusting of iron can be prevented are
and
(d) Changes in which only
properties of a substance change
are called physical changes.
(e) Changes in which new substances are formed are called
changes.​

Answer 1

Explanation:

a) When carbon dioxide is passed through lime water, it turns milky due to the formation of calcium carbonate.

(b) The chemical name of baking soda is sodium hydrogen carbonate.

(c) Two methods by which rusting of iron can be prevented are galvanization  and painting.

(d) Changes in which only physical  properties of a substance change are called physical changes.

(e) Changes in which new substances are formed are called  chemical changes.