particulate nature of matter

Question 1

Kinetic particle theory

Answer 1

• The kinetic particle theory states that all matter is made of up tiny particles. Particles are in constant and random motion, colliding with one another
• particulate model of matter

Question 2

Particles in solid

Answer 2

A: very closely packed in regular arrangement
A: very strong forces of attraction
M: vibrate about fixed positions
E: very low kinetic energy

Question 3

Particles in liquid

Answer 3

A: closely packed in a random arrangement
A: strong forces of attraction
M: free to move within the liquid by sliding over one another
E: Low kinetic energy

Question 4

Particles in gas

Answer 4

A: far apart and in a random arrangement
A: negligible forces of attraction
M: move at high speed in all direction
E: high kinetic energy

Question 5

Density of gas, solid and liquid

Answer 5

Density: gas < liquid < solid
Most particles in solid