Boiling point
What Boiling point means in Combined Science GCSE, as defined for AQA.
Definitions of Boiling point
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Reference: AQA
As hydrocarbon molecules get larger, this increases because larger molecules have stronger intermolecular forces, so more energy is needed to overcome them.
The fixed point at which a substance changes between liquid and gas, with liquid and gas coexisting at exactly that temperature.
The temperature at which boiling, the change from liquid to gas, and condensing, the reverse change, take place.
Topics that use Boiling point
- Properties of hydrocarbons (AQA GCSE)
- The three states of matter (AQA GCSE)
Related terms
- Intermolecular forces
- Bonding and structure
- Changes of state
- Changes of state and energy transfer
- Chemical reactions
- Combustion products
- Comparing temperature with fixed points
- Complete combustion
Using Boiling point in the exam
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