The particle theory of matter is a simple way of describing ​ (a)   and its ​ (b)  

• matter
• behaviour
• particles
• properties

Matter is made up of what sized particles?

• Small

• Tiny

• Large

• Medium

All particles are still and do not move.

• False

• True

Reorder the following according to how fast the particles move from slowest to fastest

• Liquid

• Gas

• Solid

All particles of one size are ...

• different

• similar

• identical

• the same size

Temperature affects the ​ (a)   at which the particles​ (b)   . Warmer temperatures make the particles move ​ (c)   while particles move slower when the temperature is ​ (d)   .

• speed
• move
• faster
• colder

Particles are attracted to one another. This means that they

• move around one another

• stay close together

• stay far apatrt

• move together and apart constantly

Particles have space between them.

• True

• False

Ina a gas there are ​ (a)   spaces between the particles.

• larger
• smaller

In liquids and solids, particles are​ (a)   together and have ​ (b)   forces of attraction between them.

• closer
• stronger
• not close
• weaker