Interconversions between the three states of matter
4 marks · NormalComplete the table below about the names of the processes for interconversion between all three states of matter.
| From state | To state | Process name |
|---|---|---|
| Solid | Liquid | ? |
| Liquid | Gas | ? |
| Gas | Liquid | ? |
| Gas | Solid | ? |
Describe how the energy of the particles changes in the process from liquid to gas.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a) Solid → Liquid: Melting; Liquid → Gas: Evaporation/Boiling; Gas → Liquid: Condensation; Gas → Solid: Deposition
(b) As a liquid changes to a gas, the particles gain energy, move more quickly, and become much further apart.
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Marking points
B1 (a) · 1 mark · Correctly names melting and evaporation/boiling.
B2 (a) · 1 mark · Correctly names condensation and deposition.
M1 (b) · 1 mark · States that particles gain energy (kinetic energy increases).
A1 (b) · 1 mark · Describes particles move faster and spread further apart (as a gas).
Worked solution
a) Answers for process name: Solid → Liquid: Melting Liquid → Gas: Evaporation (or boiling) Gas → Liquid: Condensation Gas → Solid: Deposition
b) As a liquid changes to a gas, the particles gain kinetic energy, move more quickly, and become much further apart.