The energy involved in change of state
1 mark · EasyWhich of the following best describes what happens to the energy supplied to a substance at its boiling point?
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Correct option: It is used to overcome the forces between molecules.
Common mistakes: Chose 'raise the temperature further'.; Chose 'break the bonds inside the molecules'.
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Marking points
B1 · 1 mark · Correct option given
Worked solution
At boiling point, the energy supplied is used to overcome the forces (intermolecular forces) between molecules so the liquid can become a gas.