AQA GCSE Physics 4.3 Particle model of matter overview quiz quiz

Its mass divided by its weight

Its volume per unit mass

Its weight per unit area

Its mass per unit volume

The particles in a gas are far apart, filling a much larger volume

A gas always contains far fewer particles than the same material as a solid

Each individual particle in a gas has a noticeably smaller mass than in a solid

Gas particles do not move around at all, so they cannot spread out

$0.2\,g/cm^3$

$5\,g/cm^3$

$50\,g/cm^3$

$600\,g/cm^3$

The kinetic energy of the whole object as it moves from one place to another

The energy needed to lift the whole object up against the force of gravity

The total kinetic and potential energy of all its particles

The heat energy that the object loses to its surroundings as it cools

No energy is being supplied to the substance at all while it is melting

All of the particles in the substance completely stop moving while it is melting

Heat is being lost to the surroundings exactly as fast as it is supplied

The energy increases the particles' potential energy, not their kinetic energy

It is a physical change in which mass is conserved

It is a chemical change that forms brand new substances

It always increases the total mass of the substance involved

It can never be reversed once it has happened

The energy to raise the temperature of $1\,kg$ by $1\,^{\circ}C$

The energy to change the state of $1\,kg$ with no temperature change

The total internal energy that is stored inside $1\,kg$ of the substance

The energy needed to move a mass of $1\,kg$ through a distance of $1\,m$

$668\,J$

$66800\,J$

$167000\,J$

$334000\,J$

By colliding only with each other and never with the container walls

By sticking firmly to the inside of the container walls

By condensing into a liquid on the cold container walls

By colliding with the walls and exerting a force

The pressure increases

The pressure decreases

The pressure stays the same

The number of particles increases

$33\,kPa$

$300\,kPa$

$120\,kPa$

$600\,kPa$

Fusion, because melting a solid into a liquid needs much more energy overall

They are always exactly equal for any given substance

Vaporisation, because all the forces between particles must be broken

It depends entirely on the shape and size of the container used