PHS Edexcel GCSE Combined Science CC1 states of matter

What is being described here? Random, far apart.

• arrangement of particles in a solid

• arrangement of particles in a liquid

• arrangement of particles in a gas

• movement of particles in a liquid

Random and close together is...

• how particles are arranged in a liquid

• how particles are arranged in a gas

• how particles move in a liquid

• how particles move in a gas

How are particles arranged in a solid?

• random and far apart

• random and close together

• regular and close together

• regular and far apart

What word described a gas changing into a liquid?

• evaporation

• sublimation

• freezing

• condensation

What word describes a solid turning into a gas?

• sublimation

• subtraction

• subsection

• substandard

What word describes a liquid changing into gas?

• evaporation

• boiling

• melting

• freezing

What happens to the temperature of a substance when it melts or boils?

• The temperature remains constant while the substance changes state.

• The temperature increases while the substance changes state.

• The temperature decreases while the substance changes state.

When a substance changes from a liquid to a gas energy is used to...?

• heat up the air

• increase the kinetic energy of particles

• overcome forces of attraction between particles

• help you keep revising