PARTICLE MODEL OF MATTER

Question 1

order of density in solid/liquid/gas

Answer 1

solid = highest
gas = lowest

Question 2

3 main assumptions of particle model

Answer 2

1. particles are small
2. inelastic
3. spheres

Question 3

When a solid is heated, energy is transferred to the particles’ ________ energy stores, which causes them to vibrate faster.

Answer 3

kinetic

Question 4

definiton of density

Answer 4

how much mass a substance has per unit volume

Question 5

on a state changing graph, what do the horizontal lines represent

Answer 5

bonds breaking/making

Question 6

specific latent heat definition

Answer 6

the energy requried to change 1kg of a substance from one state to another, without changing its temperature

Question 7

what is specific latent heat def for cooling

Answer 7

the energy released by a change in state

Question 8

specific latent heat of vaopurisation

Answer 8

energy change when a substance changes between a liquid + gas

Question 9

specific latent heat of fusion

Answer 9

energy change when a substance changed between a solid + liquid

Question 10

What happens to the temperature of a substance whilst it changes state?

Answer 10

remains constant

Question 11

Which is the correct formula for the relationship between pressure and volume, at constant temperature?

Answer 11

pxv=constant