Particle model of matter

Question 1

What are the 3 states of matter?

Answer 1

Solid, liquid and gas.

Question 2

What is the equation for density?

Answer 2

Density = mass/volume

Question 3

(RP) Investigate the density of regular and irregular solids and liquids.

Answer 3

1) Set up the equipment.
2) Record the height of the water in the measuring cylinder and the mass of the solid/liquid being tested.
3) Add the solid/liquid being tested to the measuring cylinder.
4) Record the new height in the measuring cylinder.
5) Subtracting the original height from the new height gives the volume of the solid/liquid being tested.
6) Now the density can be calculated.

Question 4

What are the variables for the practical: investigate the density of regular and irregular solids and liquids.

Answer 4

IV= Material being tested.
DV= The volume and mass
CV= The temperature.

Question 5

What is the specific latent heat?

Answer 5

The energy needed to cause 1kg of a substance to change state.

Question 6

What is the equation for the energy for a change of state?

Answer 6

Energy for a change of state= mass * specific latent heat.

Question 7

What is the latent heat of fusion?

Answer 7

It is the energy needed for a substance to change from solid to liquid (melt)

Question 8

What is the latent heat of vaporisation?

Answer 8

It is the energy needed for a substance to change from a liquid to a gas (evaporate).

Question 9

How do you work out constant?

Answer 9

Constant= pressure * volume