What happens when calcium is treated with water?​
I. It does not react with water.
II. It reacts violently with water.
III. It reacts moderately with water.
IV. Bubbles of hydrogen gas formed stick to the surface of calcium.

1. II and III
2. I and II
3. III and IV
4. I and IV​

What happens when Calcium reacts with water?

Calcium reacts with cold water and forms Calcium hydroxide and Hydrogen gas.

What happens when calcium is treated with water?

(i) It does not react with water

(ii) It reacts violently with water

(iii) It reacts less violently with water

(iv) Bubbles of hydrogen gas formed stick to the surface of calcium

Question 6
What happens when calcium is treated with water?

(i) It does not react with water.
(ii) It reacts violently with water.
(iii) It reacts less violently with water.
(iv) Bubbles of hydrogen gas formed stick to the surface of calcium.

a) (i) and (iv) (b) (ii) and (iii)

(c) (i) and (ii) (d) (iii) and (iv)

What happens when calcium is treated with water?

(i) The gas released during the reaction catches fire.
(ii) Calcium reacts with water less violently as compared to sodium.
(iii) Bubbles of hydrogen gas formed stick to the surface of calcium.