Worked example
Solid ice becomes liquid water as it warms. What change is this?
Answer & why
Answer: melting
Melting changes a solid into a liquid.
Grade 2 · Science
Name changes of state
Distinguish melting, freezing, evaporation and condensation.
8 authored questions + worked example
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All questions
All 8 authored questions for this skill.
Question 1
Water on a wet cloth becomes vapor as the cloth dries. Which change removes the liquid?
- condensation
- freezing
- evaporation
- melting
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: evaporation
Water leaves as vapor through evaporation.
Question 2
A cool lid collects liquid drops from water vapor. Which change produces the drops?
- melting
- condensation
- freezing
- evaporation
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: condensation
Water vapor becomes liquid on the cooler lid.
Question 3
Solid ice becomes liquid water as it warms. What change is this?
- condensation
- evaporation
- freezing
- melting
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: melting
Melting changes a solid into a liquid.
Question 4
Liquid water becomes solid ice as it cools. What change is this?
- condensation
- melting
- freezing
- evaporation
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: freezing
Freezing changes a liquid into a solid.
Question 5
Liquid water at a puddle's surface becomes water vapor. What change is this?
- condensation
- melting
- freezing
- evaporation
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: evaporation
Evaporation changes liquid water into gas at its surface.
Question 6
Water vapor forms liquid droplets on a cool surface. What change is this?
- evaporation
- freezing
- melting
- condensation
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: condensation
Condensation changes gas into liquid.
Question 7
A frozen ice pop becomes liquid on a warm plate. What change is described?
- freezing
- melting
- condensation
- evaporation
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: melting
The ice pop changes from solid to liquid.
Question 8
Water in an ice tray turns solid in a freezer. What change is described?
- evaporation
- condensation
- melting
- freezing
A hint
Name the starting state and ending state before naming the change.
Answer & why
Answer: freezing
The liquid water becomes a solid.