Explain why calcium metal after reacting wiyh water starts floating on its surface write the chemical equation for the reactipn . name one more metal
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This is so because according to the reaction:
Ca + 2H2O -------> Ca(OH)2 + H2
Hydrogen gas is formed, which is the lightest known gas. The hydrogen gas bubbles formed lift the piece of calcium up (buoyancy), making it float on water.
Another metal can be sodium..but in laboratory please don't put sodium in water as the reaction is vigorous and it can catch fire (I have experienced this...I put sodium in water [only a small piece] and it caught fire......and the plastic cover of out laboratory got burned...I got scolding....)
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Ca + 2H2O -------> Ca(OH)2 + H2
Hydrogen gas is formed, which is the lightest known gas. The hydrogen gas bubbles formed lift the piece of calcium up (buoyancy), making it float on water.
Another metal can be sodium..but in laboratory please don't put sodium in water as the reaction is vigorous and it can catch fire (I have experienced this...I put sodium in water [only a small piece] and it caught fire......and the plastic cover of out laboratory got burned...I got scolding....)
Thanks...please follow to get more answers
Anonymous:
heyy...
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