GCSE Physics Particle model of matter

1. The density of a gas is always greater than the density of a solid.

2. The density of a gas can be greater or less than the density of a solid, depending on the substance.

3. The density of a gas is always equal to the density of a solid.

4. The density of a gas is always less than the density of a solid.

1. Melting

2. Sublimation

3. Condensation

4. Boiling

1. Specific heat capacity

2. Latent heat of vaporization

3. Latent heat of fusion

4. Thermal conductivity

1. The spaces are very small and fixed.

2. The spaces are filled with other particles.

3. The spaces are non-existent.

4. The spaces are large and variable.

1. Melting

2. Boiling

3. Freezing

4. Sublimation

1. Particles vibrate in fixed positions.

2. Particles move randomly and are close together.

3. Particles move randomly and are far apart.

4. Particles are stationary.

1. Melting

2. Evaporation

3. Condensation

4. Freezing

1. Particles are widely spaced and move rapidly.

2. Particles move past each other.

3. Particles are closely packed and vibrate in fixed positions.

4. Particles are randomly arranged and move freely.

1. It remains the same.

2. It fluctuates randomly.

3. It increases.

4. It decreases.

1. It remains the same.

2. It fluctuates unpredictably.

3. It increases.

4. It decreases.