Lesson T1.2.1
T1.2.1 Changes of state explained by particles Quiz: KS3 Chemistry, Unit 1
20 questions
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Lesson T1.2.1, Changes of state explained by particles: 20 multiple choice questions for the KS3 Chemistry (National Curriculum), Unit 1: The particulate nature of matter, written with Revision Ninja.
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The 20 questions
-
What happens to particles when a solid melts into a liquid?
- Spread widely apart
- Slide past each other
- Form fixed crystals
- Stop moving entirely
-
What is the name of the change when a liquid turns into a gas at its surface?
- Evaporation
- Freezing
- Condensation
- Sublimation
-
What is the name of the change of state when a gas turns into a liquid?
- Melting
- Sublimation
- Condensation
- Evaporation
-
Which change of state is the reverse of melting?
- Freezing
- Sublimation
- Condensation
- Boiling
-
Which change of state takes a solid straight to a gas?
- Sublimation
- Freezing
- Condensation
- Evaporation
-
What happens to the temperature of a pure substance while it is melting?
- Fluctuates randomly
- Decreases steadily
- Stays constant
- Increases rapidly
-
Which of these changes is a reversible physical change?
- Rusting iron
- Burning wood
- Cooking an egg
- Freezing water
-
Where do bubbles form in a liquid during boiling?
- Only at the bottom
- Only at the surface
- Outside the container
- Throughout the liquid
-
Water in a puddle disappears on a warm sunny day. Which change of state is this?
- Condensation
- Melting
- Freezing
- Evaporation
-
Which change of state causes dew to form on grass overnight?
- Evaporation
- Melting
- Condensation
- Sublimation
-
What is the name of the change when ice turns directly into water vapour?
- Condensation
- Melting
- Evaporation
- Sublimation
-
Why does a liquid evaporate even when below its boiling point?
- Liquid expands fully
- All particles boil
- Surface particles escape
- Pressure forces escape
-
Which change of state requires particles to lose energy?
- Boiling
- Evaporation
- Melting
- Freezing
-
What happens to particles when a gas cools to form liquid droplets?
- Lose energy
- Stay identical
- Gain energy
- Expand further
-
Why does a solid expand slightly when heated before it melts?
- Absorb water
- Vibrate more
- Multiply rapidly
- Decrease mass
-
Where do vapour bubbles form during the boiling of a liquid?
- Inside liquid
- Glass walls
- Only surface
- Air above
-
How do gas particles compare to liquid particles in energy and spacing?
- More energy
- Heavier mass
- Less energy
- Tighter packed
-
What state is a pure substance at 50 degrees Celsius if it melts at 0 and boils at 100?
- Liquid
- Plasma
- Solid
- Gas
-
What term describes the temperature at which a pure substance changes from solid to liquid?
- Freezing point
- Melting point
- Boiling point
- Condensation point
-
Which energy change occurs when a substance freezes?
- Energy released
- Energy absorbed
- Energy created
- Energy destroyed
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