P3 Science · Chapter 14brightbit.net/worksheets
Matter — Changes of State
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
What is the term for the change of state from solid to liquid?
(a) Melting(b) Freezing(c) Evaporation(d) Condensation
- 2.
What is the term for the change of state from liquid to solid?
(a) Freezing(b) Melting(c) Condensation(d) Evaporation
- 3.
When a puddle of water disappears on a sunny day, which change of state has occurred?
(a) Evaporation (liquid → gas)(b) Condensation (gas → liquid)(c) Melting (solid → liquid)(d) Freezing (liquid → solid)
- 4.
Dew forms on grass in the early morning. Which change of state causes this?
(a) Condensation (gas → liquid)(b) Evaporation (liquid → gas)(c) Freezing (liquid → solid)(d) Melting (solid → liquid)
- 5.
Which change of state occurs when water vapour in the air touches a cold glass and forms water droplets?
(a) Condensation(b) Evaporation(c) Melting(d) Freezing
- 6.
Which change of state is the REVERSE of melting?
(a) Freezing(b) Evaporation(c) Condensation(d) Sublimation
- 7.
A wet shirt is hung on a line on a hot, windy day. It dries quickly. Which process is responsible?
(a) Evaporation(b) Condensation(c) Freezing(d) Melting
- 8.
What happens to the temperature of water while it is melting (changing from solid ice to liquid)?
(a) It stays at 0°C (the melting point) until all ice has melted(b) It continuously rises(c) It drops to below 0°C(d) It jumps suddenly to 100°C
- 9.
Name the change of state that occurs when liquid wax in a candle cools and hardens.
Answer: ____________________________________
- 10.
Are changes of state (like melting and freezing) chemical or physical changes?
(a) Physical changes — no new substance is formed(b) Chemical changes — new substances are produced(c) Both physical and chemical(d) Neither physical nor chemical
Answer key — P3 Science: Matter — Changes of State
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- 1.(a) Melting
- 2.(a) Freezing
- 3.(a) Evaporation (liquid → gas)
- 4.(a) Condensation (gas → liquid)
- 5.(a) Condensation
- 6.(a) Freezing
- 7.(a) Evaporation
- 8.(a) It stays at 0°C (the melting point) until all ice has melted
- 9.Freezing
- 10.(a) Physical changes — no new substance is formed
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