Match and complete the sentences.
A molecule of a compound
when it is heated or cooled
The molecules of a gas
has atoms of different kinds
New substances are formed
hardly attract each other
Matter changes state
carbon combines with oxygen
When coal is burnt
during a chemical change
The molecules of a liquid
are packed more loosely than those of a solid
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Explanation:
23° is heated or cooled
The molecules of a gas
has atoms of different kinds
New substances are formed
hardly attract each other
Matter changes state
carbon combines with oxygen.
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