Kinetic Particle Model of Matter

Question 1

What are the states of matter?

Answer 1

• Solid
• Liquid
  
  • Gas

Question 2

Properties of Solids:

Answer 2

1. Fixed Shape, FIxed Volume
2. Packed tightly together
3. Vibrates at place
4. High Desnity
5. Cannot Flow
6. Incompressible

Question 3

Properties of Gases:

Answer 3

1. Fast-Moving Particles
2. Compressible
3. No fixed shape and volume
4. Takes container’s shape
5. low density

Question 4

Properties of Liquids:

Answer 4

1. Incompressible
2. No fixed shape, fixed volume
3. High density
4. can flow and take shape of container

Question 5

Kinetic Particle Models

Answer 5

Question 6

What happens when the temperature increases?

Answer 6

Object Heated → Average KE increases → Particles Move Faster

Question 7

What happens when temperatures decreases?

Answer 7

Object Cooled → KE decreases → Particles move more slowly

Question 8

What is the evidence for the Kinetic Particle Model of Matter?

Answer 8

Brownian Motion

Question 9

What is Brownian Motion?

Answer 9

It is the random movement of microscopic particles (pollen grains, smoke particles) in a fluid due to collisions by the molecules of the fluid.

Question 10

How do Gases exert Pressure?

Answer 10

Gas particles move randomly, pressure is created in their collision with a container’s walls - creating force during the collision.

Question 11

How does the pressure of gas vary with its temperature?

Answer 11

Pressure is directly proportional to Temperature.

P = KT

Question 12

How does the pressure of a goas vary with its volume?

Answer 12

Pressure is inversely proportional to volume.

P = 1/V or PV = K

If the temperature doesn’t change,

p₁V₁ = p₂V₂