Edexcel GCSE Combined Science CP14 Particle model overview quiz quiz

Density = volume / mass

Density = mass x volume

Density = mass / volume

Density = mass + volume

0.2 g/cm3

18000 g/cm3

360 g/cm3

5 g/cm3

Solid

Gas

Liquid

They are all equal

The chemical energy stored in a battery that can be released to power a circuit

The total kinetic and potential energy of all the particles in a substance

The energy carried by a wave as it travels

The energy that is lost to the surroundings as heat

The energy needed to change the state of 1 kg of a substance with no temperature change

The total kinetic and potential energy stored in a substance

The energy to raise the temperature of 1 kg of a substance by 1 degree Celsius

The mass of a substance divided by its volume

No energy at all is supplied to the solid while it is melting, so it simply cannot get any hotter

The particles stop moving completely once melting begins

Some of the mass is destroyed as the solid turns to liquid

The energy supplied breaks the forces between particles rather than raising their kinetic energy

The energy to change the state of 1 kg of a substance without a temperature change

The energy needed to raise the temperature of 1 kg of a substance by 1 degree Celsius

The mass of a substance divided by the volume it occupies

The total internal energy stored in a fixed mass of gas

Held in a fixed, regular pattern and only able to vibrate on the spot

Far apart and moving quickly in all directions

Close together but able to move past each other

Joined together in long, fixed chains

Chemical and irreversible

Neither

Physical and reversible

They destroy mass

It decreases as the particles lose energy to the surroundings

It stays exactly the same even though the temperature rises

It is converted directly into extra mass

It increases because the particles gain kinetic energy

A change of state at constant temperature

The substance cooling down and releasing energy to its surroundings

The temperature of the substance rising very quickly

The substance steadily losing some of its mass

Each individual particle in the gas is much heavier than a particle in the solid

Its particles are much further apart, so the same mass takes up a larger volume

The gas contains far fewer particles than the solid does in total

The particles in a gas have no mass at all