Particle model of substances in the gas state | Science

Starter quiz

What is a particle?
- A type of gas
- A small portion of matter ✓
- A type of container
When a substance is compressed, it is said to take up ______ space than before.
- 'less' ✓
What happens to the particles in a substance when it changes from the liquid to solid state?
- They slow down ✓
- They move more freely and quickly
- They become larger
When a substance changes from solid state to liquid state, it is said to have ______.
- 'melted' ✓
In which state of matter are particles closest together?
- 'solid' ✓
True or False? When a substance changes state, its mass will change (either increase/decrease)?
- True
- False ✓

Which state of matter allows particles to fill the whole of a container and be compressed?
- Solid state
- Liquid state
- Gas state ✓
What is the primary characteristic of the movement of particles in the gas state?
- Random movement ✓
- Vibrational movement
- Fixed position
Order the following states of matter based on the strength of the forces of attraction between particles. Start with the state of matter which has the strongest forces of attraction between particles.
- 1
  
  ⇔
  
  Solid state
- 2
  
  ⇔
  
  Liquid state
- 3
  
  ⇔
  
  Gas state
Which is the correct definition of compression, when referring to substances in the gas state being compressed?
- Volume reduces due to increased pressure bringing particles closer together. ✓
- Reducing the size whilst maintaining the quality.
- Assessing a material's resistance to distortion under force.
Why can substances in the gas state flow and fill the shape of their container?
- Because their particles move in fixed positions
- Because their particles are larger than liquids and solids
- Because their particles move freely and spread out ✓
Between particles in the gas state there is ______.
- 'only space' ✓

Loading worksheet ...

Loading presentation ...

In the gas state a substance can flow, it fills the whole of a container and can be compressed.
In the gas state, particles of a substance are moving very quickly in random directions with gaps between them.
In the gas state, particles have enough energy to be free of the attractive forces between them.
There is nothing at all between the particles in a gas.

The idea that there is air between the particles in a gas.

Emphasis on explaining that air contains particles and has nothing between them.

Gas state - Substances in the gas state can be compressed to take up less space.
Particle - All substances are made of tiny particles, these move differently depending on the state of matter of the substance.
Random movement - In a gas state the particles have a random movement, they move in all directions.
Compress - Compress means that something can be made to take up less space than before. Substances in the gas state can be compressed.