Changes of State (AQA GCSE Physics Combined Science): Flashcards
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What happens to mass during state changes?
What happens to mass during state changes?
Conserved
If 20g of liquid evaporates, what is the mass of gas?
If 20g of liquid evaporates, what is the mass of gas?
20g
Are state changes reversible?
Are state changes reversible?
Yes, they are reversible physical changes
State changes: chemical or physical?
State changes: chemical or physical?
Physical, not chemical
Why aren't state changes chemical?
Why aren't state changes chemical?
Material retains original properties when reversed
Melting definition
Melting definition
Solid to liquid
Freezing definition
Freezing definition
Liquid to solid
Boiling definition
Boiling definition
Liquid to gas
Condensation definition
Condensation definition
Gas to liquid
Sublimation definition
Sublimation definition
Solid to gas
Deposition definition
Deposition definition
Gas to solid
Where does evaporation occur?
Where does evaporation occur?
Only on the surface of liquid
Why does only the surface evaporate?
Why does only the surface evaporate?
Surface particles have enough energy