Compare the movement of particles between solids and liquids, how are molecules arranged in a gas, and what is the physical effect of cooling on the three states of matter?

Question 3

a) Compare the movement of particles between solids and liquids.

• i) Solids: In solids, the particles vibrate in a fixed position.
• ii) Liquids: In liquids, particles slide past each other/move about each other.

b) How are the molecules arranged in a gas?
In a gas, particles are relatively far apart.

c) What is the physical effect of cooling on the three states of matter?

• i) Solid: Solids contract when cooled and the state stays the same.
• ii) Liquid: Liquids contract and solidify when cooled.
• iii) Gas: Gases condense to liquid when cooled.