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They form calcium phosphide Ca3P2 6Ca + P4 --> 2Ca3P2
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it reacts vigorously to form a calcium salt
31.6grams
calcium bicarbonate is formed
electrons move from the calcium atoms to the chlorine atoms
CaS + 2HCl --> H2S + CaCl2
the outer cell will burn up leaving calcium-oxide
it depends what acid, but generally it would produce carbon dioxide, water, and a calcium salt.
Calcium carbonate is practically insoluble in pure water; if the rain water is acid calcium carbonate may be dissolved.
Calcium reacts slowly with water. The reaction forms calcium hydroxide, Ca(OH)2 and hydrogen gas (H2).