Physical Change And Equilibrium

Question 1

What us physical change?

Answer 1

It doesn’t involve living things or new substances being formed

Question 2

What cause physical change?

Answer 2

Forces and energy transfers

Question 5

What is diffusion?

Answer 5

The movement of particle in fluids from own region to another

Question 6

What is conduction?

Answer 6

When heat passes through solids by vibrating particles

Question 8

How do you reduce conduction?

Answer 8

• Trap the air

Question 9

What makes a good conductor?

Answer 9

It’s high in density

Question 11

What is heat measured in?

Answer 11

Joules

Question 12

What is Brownian motion?

Answer 12

The evidence that matter consists of particles that move randomly and fast

Question 13

Thermal radiation can travel through where?

Answer 13

Empty space

Question 14

How do you reduce radiation?

Answer 14

• Shiny surfaces

Question 15

The temperature we feel is what?

Answer 15

Subjective

Question 16

What does equilibrium mean?

Answer 16

Balanced

Question 17

How do you reach equilibrium?

Answer 17

• Transfer energy
• Objects change position
• Particles move differently

Question 18

How is heat transferred in fluids?

Answer 18

Convection

Question 19

How do you reduce convection?

Answer 19

• Use a vacuum

Question 20

When does convection form?

Answer 20

When heat changes the density of a fluid

Question 21

What happens to a piece of rock is heated up?

Answer 21

They stay the same