Lesson 6.3.1.2
6.3.1.2 Changes of state Quiz: AQA Combined Science, Unit 20
20 questions
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Lesson 6.3.1.2, Changes of state: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 20: Particle model of matter, written with Revision Ninja.
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The 20 questions
-
Which change of state turns a solid into a liquid?
- Condensing
- Melting
- Freezing
- Sublimating
-
Which process changes a solid directly into a gas?
- Freezing
- Condensation
- Melting
- Sublimation
-
Which change of state turns a gas into a liquid?
- Boiling
- Sublimation
- Melting
- Condensation
-
Which change turns a liquid into a solid?
- Condensation
- Melting
- Evaporation
- Freezing
-
What happens to total mass during a change of state?
- It fluctuates
- It increases
- It decreases
- It is conserved
-
Why is a change of state classified as a physical change?
- Mass is lost
- Atoms are destroyed
- New bonds form
- It is reversible
-
What happens to temperature during a change of state?
- Increases rapidly
- Fluctuates wildly
- Stays constant
- Decreases steadily
-
Which term describes a change that can be reversed to recover the original material?
- Physical change
- Neutralisation
- Chemical change
- Combustion
-
On a heating graph, what does a horizontal section represent?
- Change of state
- Energy loss
- Temperature rise
- Density decrease
-
On a heating graph, what does a sloping section represent?
- Boiling point
- Temperature rising
- Melting point
- State change
-
Which graph feature indicates that a substance is melting?
- Vertical line
- Steep gradient
- Horizontal line
- Curved upward
-
A 2 kg sample of water is changed into steam. What is the mass of the steam?
- 2 kg
- 0 kg
- 4 kg
- 1 kg
-
Melting and freezing of the same substance are best described as:
- Chemical processes.
- Independent processes.
- Reverse processes.
- Irreversible processes.
-
A cooling graph for water has a horizontal section at 0 degrees C. Which process does this show?
- Boiling
- Condensation
- Freezing
- Evaporation
-
Which pair of processes both involve a change between liquid and gas?
- Sublimation and melting
- Evaporation and condensation
- Boiling and sublimation
- Melting and freezing
-
When a solid is heated at its melting point, what happens to its internal energy?
- Increases
- Drops to zero
- Stays constant
- Decreases
-
Why does a liquid have more internal energy than a solid at the same temperature?
- Latent energy stored
- Greater mass
- Higher kinetic energy
- Faster particles
-
What is the name for a liquid turning into a vapour below its boiling point?
- Boiling
- Sublimation
- Evaporation
- Condensation
-
Which process is NOT classified as a physical change of state?
- Condensation
- Thermal expansion
- Evaporation
- Melting
-
A 0.5 kg block of ice melts completely. What is the mass of the water formed?
- 0.25 kg
- 1 kg
- 0 kg
- 0.5 kg
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