Lesson T3.1.3
T3.1.3 Diffusion and the particle model Quiz: KS3 Chemistry, Unit 3
20 questions
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Lesson T3.1.3, Diffusion and the particle model: 20 multiple choice questions for the KS3 Chemistry (National Curriculum), Unit 3: Pure and impure substances, written with Revision Ninja.
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The 20 questions
-
What is the net movement of particles from high to low concentration called?
- Condensation
- Diffusion
- Evaporation
- Melting
-
Why do gas particles rapidly spread out to fill any available space?
- Strong forces
- Random motion
- No collisions
- Fixed positions
-
Which state of matter typically exhibits the fastest rate of diffusion?
- Liquid
- Solid
- Plasma
- Gas
-
Why does diffusion happen very slowly in solids?
- Particles flow
- Particles expand
- Particles fly
- Particles vibrate
-
How do food colouring particles spread through still water?
- Random movement
- Convection currents
- Magnetic pull
- Chemical sinking
-
How do perfume smells travel across a room to reach your nose?
- Melting
- Distillation
- Sublimation
- Diffusion
-
Which factor increases the speed at which diffusion occurs?
- Higher temperature
- Freezing point
- Lower pressure
- Greater mass
-
What drives ink particles to spread evenly through a glass of water?
- Gravity force
- Concentration gradient
- Chemical reaction
- Magnetic attraction
-
Which process describes particles slowly spreading through a liquid until mixed?
- Melting
- Freezing
- Evaporation
- Diffusion
-
Why does cooling a gas slow down the rate of diffusion?
- More friction
- Less kinetic energy
- Stronger gravity
- Larger particles
-
What does a gas spreading out in a container without stirring prove?
- Fixed lattice structure
- Constant random motion
- Zero particle mass
- Strong magnetic charge
-
Which key property of particles explains the process of diffusion?
- Random motion
- Fixed positions
- Vibrating tightly
- Strong attractions
-
How do cooking smells travel quickly across a room without stirring?
- Heat magnetism
- Particle motion
- Chemical reactions
- Air currents
-
Why do gas particles diffuse much faster than liquid particles?
- Stronger bonding
- Heavier mass
- Higher speed
- Greater density
-
A sugar cube dissolves in water and spreads through it over time without stirring. What process spreads the sugar particles?
- Evaporation
- Filtration
- Chromatography
- Diffusion
-
What effect does a steep concentration gradient have on diffusion?
- Faster diffusion
- Slower diffusion
- Stopped diffusion
- Reversed direction
-
In which state of matter is diffusion slowest?
- Plasma
- Solid
- Gas
- Liquid
-
What is the true driving force behind particle diffusion?
- Magnetic pull
- Gravity force
- Random movement
- Mutual attraction
-
Why do cooking smells spread faster than oil on water?
- Heavy density
- Solid structure
- Low temperature
- Gas mobility
-
What does a concentration gradient describe between two regions?
- Pressure balance
- Temperature change
- Particle difference
- Volume equality
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