Particle Model

Question 1

solid

Answer 1

• packed in a regular structure
• strong forces to hold place so they vibrate at a fixed point
• difficult to change shape

Question 2

liquid

Answer 2

• close together
• forces keep contact but can move about
• can change shape but difficult to compress

Question 3

gas

Answer 3

• separated by large distances
• weak forces so constant random movement
• can expand to fill a space
• easy to compress