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Subjects
Science State Board
Class 8
Air
Properties and uses of gases and global warming
7.
Chemical properties of carbon dioxide: choose the right answer
Exercise condition:
4
m.
1
.
The chemical formula for calcium hydrogen carbonate is
\(Ca(CO_3)_2\).
\(Ca(HCO_2)_2\).
\(Ca(HCO_3)_2\).
.
2
.
\(CO_2\)
Carbon monoxide
Oxygen
does not support for combustion.
3
. When
small amount
of \(CO_2\) passes through
drinking water
\(Ca(OH)_2\)
distilled water
, it forms
sodium carbonate
sodium bicarbonate
calcium hydrogen carbonate
.
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