P6 - Matter

Question 1

Define density?

Answer 1

How much mass is in a certain volume

Question 2

How do you calculate density?

Answer 2

Mass over volume

Question 3

How do you measure the density of an irregular object?

Answer 3

The change in water level = volume of object

Question 4

What is the correct apparatus to measure mass of the objects?

Answer 4

Mass balance

Question 5

For an irregular object, what can do you place it in with water?

Answer 5

A eureka can

Question 6

What are the 3 states of matter?

Answer 6

Solid, liquid, gas

Question 7

What is 2 differences between billing and evaporating?

Answer 7

Boiling can happen at any part of the liquid whereas evaporation only happens at surface of liquid, evaporating is a lot slower

Question 8

What is the state change from solid to gas?

Answer 8

Sublimation

Question 9

What is the state change from gas to solid?

Answer 9

Deposition

Question 10

Does gas have a fixed volume?

Answer 10

NO

Question 11

Define latent heat?

Answer 11

Energy transferred to a substance when it changes state

Question 12

What is kinetic energy dependant on?

Answer 12

Temperature

Question 13

What is internal energy?

Answer 13

Kinetic energy + potential energy

Question 14

Define internal energy?

Answer 14

The total energy held within the particles of a substance by their movement and relative positions to one another

Question 15

Define specific latent heat?

Answer 15

The energy transferred per kilogram when a substance changes state

Question 16

What is the difference between the specific latent heat of fusion and vaporisation?

Answer 16

Fusion is melting + freezing whereas vaporisation is boiling + condensing

Question 17

Describe he relationship when volume increases and pressure decreases?

Answer 17

Inversely proportional

Question 18

What increases gas pressure?

Answer 18

When particles collide more frequently with sides of the container, each collision is more forceful