Physical Changes Quiz

What is the arrangement of water molecules in ice called?

• A) Crystal

• B) Lattice

• C) Grid

• D) Network

What is 'dry ice'?

• A) Frozen water

• B) Solidified carbon dioxide

• C) Solidified nitrogen

• D) Frozen oxygen

What happens to water molecules when they gain more energy?

• A) They stop moving

• B) They vibrate slower

• C) They break free from the lattice

• D) They change into a different substance

What is an example of a volatile substance?

• A) Water

• B) Petrol

• C) Salt

• D) Sugar

What is the state of water molecules in ice?

• A) Randomly arranged

• B) In a regular arrangement

• C) In a gaseous state

• D) In a liquid state

What happens to cooking oil if left at normal room temperatures?

• It evaporates

• It solidifies

• It does not vaporise

• It boils

What happens to water molecules when water is heated to its boiling point?

• They lose kinetic energy

• They gain kinetic energy and evaporate faster

• They solidify

• They condense

What is the most common example of condensation that you can observe?

• Water boiling

• Ice melting

• Breath condensing on a cold surface

• Dry ice subliming

What happens to the kinetic energy of water molecules during condensation?

• It increases

• It passes to the surface as heat energy

• It remains the same

• It turns into potential energy

What is the process called when a solid changes directly into a gas?

• Melting

• Condensation

• Sublimation

• Freezing