Chemistry, 05.10.2020 14:01, ellarsteers
When iron is burned, it combines with oxygen to form iron oxide. The table below shows the densities of all of these substances.
Substance iron
oxygen
iron oxide
Density
(g/cm3) 7.9 1.3 × 10−3 5.2
Based on the information from the data table, which of these is a correct conclusion about the burning of iron?
A.
A chemical reaction does not occur because both iron and iron oxide have high densities.
B.
A chemical reaction does not occur because burning iron causes it to melt, which is a physical change.
C.
A chemical reaction occurs because each iron atom loses mass when it is burned.
D.
A chemical reaction occurs because the density of iron is different from the density of iron oxide.
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When iron is burned, it combines with oxygen to form iron oxide. The table below shows the densities...
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