Ch-1: KPT

Question 1

What does the kinetic particle theory state?

Answer 1

All matter is made of particles that move in a constant random motion

Question 2

How are the arrangement of particles in a solid?

The way the particles are set

Answer 2

They are in order and closely packed

Question 3

How are the arrangement of particles in a liquid?

The way the particles are set

Answer 3

They are disordered and less closely packed than a solid

Question 4

How are the arrangement of particles in a gas?

The way the particles are set

Answer 4

They are disordered and very far apart

Question 5

How is the attractive force between solid particles ?

Force that holds particles together

Answer 5

Very strong

Question 6

How is the attractive force between liquid particles ?

Force that holds particles together

Answer 6

Strong

Question 7

How is the attractive forces between gas particles ?

Force that holds particles together

Answer 7

Very Weak

Question 8

How is the kinetic energy of solid particles?

Moving energy

Answer 8

Very Low

Question 9

How is the kinetic energy of liquid particles?

Moving energy

Answer 9

Low

Question 10

What is the motion of solid particles?

movement

Answer 10

Vibrate and rotate in fixed positions

Question 10

How is the kinetic energy of gas particles?

Moving energy

Answer 10

Very high

Question 11

What is the motion of liquid particles?

movement

Answer 11

Move freely throughout the liquid

Question 12

What is the motion of gas particles?

movement

Answer 12

Move about raplidly in any direction

Question 13

Why does a gas not have fixed volume?

Answer 13

• Particles too far away from one another so,
• Can be compressed so it,
• Does not have a fixed volume

Question 14

Why does a solid have a fixed volume?

Answer 14

• Particles too close to one another so,
• Cannot be compressed so it,
• Has a fixed volume

Question 15

Why does a liquid have a fixed volume?

Answer 15

• Particles too close to one another so,
• Cannot be compressed so it,
• Has a fixed volume

Question 16

What is melting?

Answer 16

Melting is a process in which a substance changes from solid to liquid

Question 17

What is freezing?

Answer 17

Freezing is a process in which a substance changes from liquid to a solid

Question 18

What is condensation?

Answer 18

Condensation is a process in which a substance changes from a gas to a liquid

Question 19

What is evaporation?

Answer 19

Evaporation is a process in which a substance changes from liquid to gas

Question 20

What is sublimation?

Answer 20

Sublimation is a process in which a substance changes from solid to gas

Question 21

When do changes in state occur?

Answer 21

Changes in state occur when particles of matter gain or lose energy

Question 22

What is diffusion?

Answer 22

Diffusion is the movement of particles from a region of higher concentration to a region of lower concentration

Question 23

Give 2 examples of diffusion

Answer 23

1. Aromas from perfumes spreading in a room
2. Color from tea spreading in a solution

Question 24

What is the effect of temperature on the rate of diffusion of gases and liquids?

Answer 24

The higher the temperature, the higher the rate of diffusion

Question 25

Is diffusion in liquid or gas slower?

Answer 25

The rate of diffusion in liquids are much slower than that in gases

Question 26

Gases with lower molecular mass or higher molecular mass diffuse faster?

Answer 26

Gases with lower molecular mass diffuse faster than gases with higher molecular mass

Question 27

Why does air and bromine mix?

Answer 27

Since they’re both gases, the particles of bromine diffuse into the spaces between air particles while the air particles diffuse into the spaces between the bromine particles