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How each exam board covers it

AQA GCSE Chemistry · 8462

Specification 4.1.2.4, 4.2.2.1, 4.2.2.4, 4.7.1.3, 4.8.1.1 · Paper 1, Paper 2

All noble gases have very low boiling points because only weak attractive forces act between their separate atoms. Little energy is needed to overcome these attractions and separate the atoms when the liquid boils.
Revise: Group 0 Noble Gases
The temperature at which a substance boils or condenses.
Revise: States of Matter
The temperature at which a substance boils, changing from liquid to gas throughout the liquid.
Revise: Small Molecule Properties

2 more notes

The temperature at which a liquid boils.
Revise: Hydrocarbon Properties and Combustion
The temperature at which a liquid boils and changes to a gas throughout the liquid.
Revise: Pure Substances

AQA Chemistry past papers

Edexcel GCSE Chemistry · 1CH0

Specification 1.42, 2.4, 6.7, 6.16, 8.3, 8.5 · Paper 1, Paper 2

The temperature at which a substance changes between liquid and gas states.
Appearance, state, melting point, boiling point, density and electrical conductivity are all physical properties.
Revise: Metals vs Non-metals Properties
The temperature at which a liquid boils throughout and changes into a gas.
Revise: Classification of Elements and Compounds
The temperature at which a pure substance changes between liquid and gas by boiling at a given pressure.
Revise: Predicting Physical State

4 more notes

The temperature at which a liquid boils and becomes a gas.
Revise: Pattern in Physical Properties
Revise: Pattern in Physical Properties
The temperature at which a substance changes between liquid and gas.
Revise: Fractional Distillation
Revise: Properties of Fractions

Edexcel Chemistry past papers

OCR GCSE Chemistry A · J248

Specification C2.3d, C2.3e, C6.2k · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

The temperature at which a liquid boils and changes to a gas at a given pressure.
At the melting point or boiling point, the transferred energy is instead used to overcome attractions between particles. It increases their potential energy and allows a new arrangement to form. For a pure substance at constant pressure, the temperature therefore remains constant while the change of state is taking place, even though energy continues to enter.
Revise: State Changes and Bonding Forces
The temperature at which a substance changes between its liquid and gas states.
Revise: Predicting States of Matter
The temperature at which a liquid boils; at the same pressure, its vapour condenses on cooling to this temperature.
Revise: Distillation Mechanisms

OCR Chemistry A past papers

OCR GCSE Chemistry B · J258

Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

The temperature at which a liquid boils under specified conditions.
At the boiling point, enough energy is being supplied for particles to overcome the attractions that keep them in the liquid and separate to form a gas throughout the liquid.
Revise: Energy transfers and changes of state
The temperature at which a substance changes between liquid and gas at a specified pressure.
Revise: Predicting states
The temperature at which a liquid boils and becomes a gas throughout the liquid.
Revise: Group 0 properties

1 more note

The temperature at which a liquid boils and becomes a gas.
Revise: Changes of state and intermolecular forces

OCR Chemistry B past papers

Exam tips

1
When given melting and boiling points, compare the temperature with both values rather than relying on the substance's usual state at room temperature.
2
When explaining a low melting or boiling point, identify the weak intermolecular forces, state that little energy is needed to overcome them, and link this to the low temperature required.
3
Treat the effect of molecular size as a comparison: larger molecules have stronger intermolecular forces, so more energy is needed and their melting and boiling points are generally higher.

How each exam board covers it

AQA GCSE Chemistry · 8462

Specification 4.1.2.4, 4.2.2.1, 4.2.2.4, 4.7.1.3, 4.8.1.1 · Paper 1, Paper 2

All noble gases have very low boiling points because only weak attractive forces act between their separate atoms. Little energy is needed to overcome these attractions and separate the atoms when the liquid boils.
Revise: Group 0 Noble Gases
The temperature at which a substance boils or condenses.
Revise: States of Matter
The temperature at which a substance boils, changing from liquid to gas throughout the liquid.
Revise: Small Molecule Properties

2 more notes

The temperature at which a liquid boils.
Revise: Hydrocarbon Properties and Combustion
The temperature at which a liquid boils and changes to a gas throughout the liquid.
Revise: Pure Substances

AQA Chemistry past papers

Edexcel GCSE Chemistry · 1CH0

Specification 1.42, 2.4, 6.7, 6.16, 8.3, 8.5 · Paper 1, Paper 2

The temperature at which a substance changes between liquid and gas states.
Appearance, state, melting point, boiling point, density and electrical conductivity are all physical properties.
Revise: Metals vs Non-metals Properties
The temperature at which a liquid boils throughout and changes into a gas.
Revise: Classification of Elements and Compounds
The temperature at which a pure substance changes between liquid and gas by boiling at a given pressure.
Revise: Predicting Physical State

4 more notes

The temperature at which a liquid boils and becomes a gas.
Revise: Pattern in Physical Properties
Revise: Pattern in Physical Properties
The temperature at which a substance changes between liquid and gas.
Revise: Fractional Distillation
Revise: Properties of Fractions

Edexcel Chemistry past papers

OCR GCSE Chemistry A · J248

Specification C2.3d, C2.3e, C6.2k · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

The temperature at which a liquid boils and changes to a gas at a given pressure.
At the melting point or boiling point, the transferred energy is instead used to overcome attractions between particles. It increases their potential energy and allows a new arrangement to form. For a pure substance at constant pressure, the temperature therefore remains constant while the change of state is taking place, even though energy continues to enter.
Revise: State Changes and Bonding Forces
The temperature at which a substance changes between its liquid and gas states.
Revise: Predicting States of Matter
The temperature at which a liquid boils; at the same pressure, its vapour condenses on cooling to this temperature.
Revise: Distillation Mechanisms

OCR Chemistry A past papers

OCR GCSE Chemistry B · J258

Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

The temperature at which a liquid boils under specified conditions.
At the boiling point, enough energy is being supplied for particles to overcome the attractions that keep them in the liquid and separate to form a gas throughout the liquid.
Revise: Energy transfers and changes of state
The temperature at which a substance changes between liquid and gas at a specified pressure.
Revise: Predicting states
The temperature at which a liquid boils and becomes a gas throughout the liquid.
Revise: Group 0 properties

1 more note

The temperature at which a liquid boils and becomes a gas.
Revise: Changes of state and intermolecular forces

OCR Chemistry B past papers

Exam tips

1
When given melting and boiling points, compare the temperature with both values rather than relying on the substance's usual state at room temperature.
2
When explaining a low melting or boiling point, identify the weak intermolecular forces, state that little energy is needed to overcome them, and link this to the low temperature required.
3
Treat the effect of molecular size as a comparison: larger molecules have stronger intermolecular forces, so more energy is needed and their melting and boiling points are generally higher.

Boiling point

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Revise Chemistry with GradeGen

Boiling point

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Revise Chemistry with GradeGen

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Related key terms

Revise Chemistry with GradeGen

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Related key terms

Revise Chemistry with GradeGen