Kinetic model of matter

Question 1

Brownian motion

Answer 1

Smoke particles are very large and they are surrounded by small air particles in motion. if enough air particles hot in one direction, there will be a large enough resultant force on the smoke particle

Question 2

Arrangement of particles in solids

Answer 2

Particles closely packed, arranged in a regular pattern

Question 3

Motion of particles in solids

Answer 3

Particles vibrate about fixed positions, held in position by strong attractive forces between particles

Question 4

Properties of solid (3)

Answer 4

1. Highest density
2. fixed volume
3. fixed shape

Question 5

Arrangement of particles in liquid

Answer 5

particles slightly less closely packed than in solids, arranged in an irregular pattern

Question 6

Motion of particles in liquids

Answer 6

particles slide over each other throughout the liquid without fixed positions, forces holding particles are weaker than in solids

Question 7

Properties of liquids (3)

Answer 7

1. slightly lower densities than solids
2. fixed volume
3. no fixed shape

Question 8

Arrangement of particles in gas

Answer 8

Particles are very far apart from one another in an irregular pattern

Question 9

Motion of particles in gases

Answer 9

Particles move freely and randomly in any direction, attractive forces between particles are weak

Question 10

Properties of gases (3)

Answer 10

1. lowest densities
2. no fixed volume, no fixed shape
3. takes the volume and shape of container