AQA GCSE Physics · 8463
Specification 4.3.1.2 · Paper 1
Revise: Changes of stateMelting, boiling, evaporation and sublimation move a substance towards a less ordered state; freezing and condensation move it towards a more ordered state.
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GCSE Physics · key term
The change from a solid directly to a gas, without passing through the liquid state.
Used by AQA, Edexcel and OCR
Specification 4.3.1.2 · Paper 1
Revise: Changes of stateMelting, boiling, evaporation and sublimation move a substance towards a less ordered state; freezing and condensation move it towards a more ordered state.
Specification 14.5 · Paper 2
The physical change in which a solid changes directly into a gas without first becoming a liquid.
Revise: Physical ChangesSublimation is the change from solid directly to gas. The reverse change, gas directly to solid, is deposition.
Specification P1.2a · Paper 1 (Foundation), Paper 3 (Higher)
A change directly from a solid to a gas without passing through the liquid state.
Revise: Conservation of massDuring sublimation, a solid changes directly into a gas. The reverse change, from gas directly to solid, also conserves mass.
Paper 1, Paper 2
A physical change in which a substance changes directly from a solid to a gas without first becoming a liquid.
Revise: Density and Mass in the Particle ModelMelting, freezing, evaporation, condensation and sublimation are physical changes.
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