P3 - Thermal physics

Which one is a property of a liquid

• Takes the shape of its container

• Has a fixed volume

• Particles vibrate about fixed point

• Has a fixed shape

The particles in a solid can...

• Move freely

• Have no bonds

• Vibrate about a fixed point

• Melt

Brownian motion is defined as...

• The random movement of small particles due to collisions with larger particles

• The random movement of particles in a solid due to collisions with smaller surrounding particles

• The random movement of particles around us

• The random movement of particles in a fluid due to collisions with smaller surrounding particles

When a substance is heated what happens to the particles

• They change state

• They evaporate

• They gain kinetic energy and move more

• They melt

During a change of state the temperature of a substance...

• Stays the same

• Increases

• Decreases

Evaporation...

• Happens to every molecule in a boiling liquid

• Only happens to the particles at the surface

• Will increase with a smaller surface area

• Is the same as boiling

When a gas changes to a liquid it is called...

• Evaporation

• Condensation

• Boiling

• Melting

How does changing the temperature affect gas pressure?

• Lower temperature means higher pressure

• Higher temperature means higher pressure

• Higher temperature means lower pressure

• Temperature has no effect

Which substance expands most when heated?

• Solid

• Liquid

• Gas

• All the same

To make a thermometer more sensitive you can...

• Decrease the length

• Decrease the diameter of the tube

• Increase the length

• Decrease the volume of the bulb