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Answer : Calcium reacts with cold water to form hydrogen gas and calcium hydroxide. So, when a calcium metal chunk is sunk into a beaker of filtered water.
After a while, the calcium metal starts to bubble energetically as calcium reacts with the water, producing a cloudy white residue and a hydrogen gas of calcium hydroxide.
Calcium is a chemical element and a mineral that is openly connected with your teeth and healthy bones.
So, when calcium reacts with the water equation it happens,
Ca + 2H2O → Ca(OH)2 + H2↑
Apart from this, the displacement reaction is a type of reaction between calcium and water.
