Particle Model Of Matter

Question 1

Particles in a solid

Answer 1

Particles are very close together

Particles arranged in a regular pattern

Particles vibrate but do not move from place to place

Question 2

Particles in a liquid

Answer 2

Particles close together

Particles not arranged in a regular pattern

Particles can move around each other

Question 3

Particles in a gas

Answer 3

Particles are very far apart

Particles not arranged in any pattern

Particles are moving very rapidly

Question 4

What is density

Answer 4

The density of a material tells us the mass for a given volume

Question 5

What is internal energy

Answer 5

Is the energy stored in a system by the particles

Is the total kinetic energy and potential energy of all the particles

Question 6

What happens to the internal energy when you heat a substance

Answer 6

It increases the internal energy

Question 7

If you cool a substance what happens to the internal energy

Answer 7

The internal energy reduces

Question 8

What is specific heat capacity

Answer 8

The specific heat capacity of a substance is the amount of energy required to raise the temp of 1kg of the substance by 1 degree Celsius

Question 9

What is specific latent heat

Answer 9

Specific latent heat of a substance is the amount of energy required to change the state of 1 kg of a substance with no temp change

Question 10

What is specific latent heat of fusion

Answer 10

Specific latent heat of fusion: the energy required to change 1kg of a substance from a solid to a liquid with no temp change

Question 11

What is specific latent heat of vaporisation

Answer 11

Specific latent heat of vaporisation: the energy required to change 1kg of a substance from a liquid to a vapour with no change in temp