Question

What happens when calcium is treated with water *
1,It does not react with water
2,It reacts violently with water
3,It reacts less violently with
4,Bubbles of hydrogen gas formed stick to the surface of calcium​

Answer 1

Answer:

After a second or so, the calcium metal begins to bubble vigorously as it reacts with the water, producing hydrogen gas, and a cloudy white precipitate of calcium hydroxide. .

Answer 2

4. bubble of hydrogen gas are formed and they get stick to the surface of calcium

and one more thing that this makes calcium to float on the water

hope it helps....