What happens when calcium is treated with water?- It does not react with water
- It reacts violently with water
- It reacts less violently with water
- 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)
Correct answer: (d) (iii) and (iv)
Explanation: Calcium reacts vigorously with water and forms hydrogen bubbles, which stick to the surface of calcium.
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