P3 particle model of matter

Question 1

what is the density equation

Answer 1

density = mass/volume

Question 2

what does density depend on

Answer 2

the spacing of the atoms in matter

Question 3

what happens to mass during changes of state

Answer 3

it stays the same

Question 4

what is the change from solid to gas called

Answer 4

sublimation

Question 5

what is internal energy

Answer 5

energy which is stored by particles for e.g. kinetic energy, potential energy

Question 6

what is specific heat capacity

Answer 6

the amount of energy required to raise the temperature of 1kg of a substance by 1 degree

Question 7

what is the equation for specific heat capacity

Answer 7

change in thermal energy = mass * specific heat capacity * temperature change

Question 8

what is specific latent heat

Answer 8

the amount of energy required to change the state of 1kg of a substance without a change in temperature

Question 9

what is the equation for specific latent heat

Answer 9

energy for a change in state = mass * specific latent heat

Question 10

what is pressure

Answer 10

when put in a container the force the molecules moving exert on the wall

Question 11

what is the equation for work done

Answer 11

pressure * volume