Particle Model

Question 1

In which state of matter do particles vibrate in a fixed position?

Answer 1

Solid

Question 2

Which state of matter has a fixed volume but not a fixed shape?

Answer 2

Liquid

Question 3

In which state do particles generally have the most energy?

Answer 3

Gas

Question 4

Which state of matter does not have a fixed shape or volume?

Answer 4

Gas

Question 5

In which change of state are particles loosely packed in random arrangement?

Answer 5

Liquid

Question 6

Which change of state occurs when a solid is heated?

Answer 6

Melting

Question 7

Which change of state occurs when a gas is cooled?

Answer 7

Condensation

Question 8

What change of state is freezing?

Answer 8

Liquid to solid

Question 9

What change of state is evaporating?

Answer 9

Liquid to gas

Question 10

What two properties do not change when a substance changes state?

Answer 10

Mass and temperature

Question 11

Define density.

Answer 11

How heavy an object is (mass) for its size (volume)

Question 12

What are the units for density?

Answer 12

kg/m3

Question 13

How do we calculate the volume of a regular object?

Answer 13

Length x heightx width

Question 14

How do we find the volume of an irregular shaped object?

Answer 14

Use a eureka/dislacement can to measure how much water it displaces

Question 15

What is the equation for calculating density?

Answer 15

Density = Mass/Volume

Question 16

What is Brownian motion?

Answer 16

The random movement of particles in fluids which does not require energy

https://www.youtube.com/watch?v=4m5JnJBq2AU

Question 17

Which two states are fluid?

Answer 17

Liquid and gas (their particles are able to move)

Question 18

Which two states exert pressure?

Answer 18

Liquids and gases

Question 19

State two ways we can increase pressure

Answer 19

Reducing volume, increasing temperature

Question 20

State two ways we can decrease pressure?

Answer 20

Increasing volume, reducing temperature

Question 21

What is internal energy?

Answer 21

The total kinetic and potential energy of particles

Question 22

What is specific heat capacity?

Answer 22

The energy required to heat 1 kg of a substance by 1°C

Question 23

What is the equation for calculating specific heat capacity?

Answer 23

SHC = Energy transferred/(Mass x Temperature change)

Question 24

What are the units for specific heat capacity?

Answer 24

J/kg °C

Question 25

What is latent heat capacity?

Answer 25

The energy required to change the state of 1kg of a substance

Question 26

What is the latent heat of fusion?

Answer 26

The energy required to melt 1kg of a solid

Question 27

What is the latent heat of vaporisation?

Answer 27

The energy required to vaporise 1kg of a liquid

Question 28

What is the equation for calculating latent heat capacity?

Answer 28

LHC = Energy transferred/Mass

Question 29

What are the units for latent heat capacity?

Answer 29

J/kg

Question 30

What is a pure substance?

Answer 30

A substance containing only one type of element or compound

Question 31

How can we test for a pure substance?

Answer 31

Check its boiling point

Question 32

What is specific heat capacity?

Answer 32

energy needed to raise the temperature of 1 kg of the material by 1 °C, with no change of state.

Question 33

What is specific latent heat?

Answer 33

energy needed to change the state of 1 kg of the material, with no change in temperature