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Subjects
Science State Board
Class 8
Air
Properties and uses of gases and global warming
8.
Chemical properties of nitrogen: choose the right answer
Exercise condition:
5
m.
1
.
The formula for calcium nitride is
\(Ca_2N_2\)
\(Ca_N3\)
\(Ca_3N_2\)
.
2
.
Nitrogen
Magnesium
Beryllium
Boron
is an electropositive metal.
3
. Nitrogen reacts with
non-metals
metalloids
metals
to form nitrogen compounds.
4
. Nitrogen combines with element at
elevated temperature
low temperature
normal temperature
and pressure or in the presence of
inhibitor
air
catalyst
.
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