PTS Year 6 Prep

Which of these is a reversible change?

• Burning paper

• Melting ice

• Cooking an egg

• Rusting iron

Which change cannot be undone?

• Boiling water

• Freezing juice

• Tearing paper

• Burning wood

What happens when water evaporates?

• It turns into ice

• It turns into gas

• It turns into solid

• It disappears

Which of these methods can separate sand from water?

• Filtration

• Dissolving

• Freezing

• Mixing

Which of these substances is soluble in water?

• Sand

• Oil

• Salt

• Plastic

What is the solvent in a sugar-water solution?

• Sugar

• Water

• Both sugar and water

• Air

Which of the following is an irreversible change?

• Freezing water

• Melting chocolate

• Baking a cake

• Boiling water

Which process is used to obtain salt from seawater?

• Melting

• Evaporation

• Boiling

• Freezing

What is condensation?

• A gas changing into a liquid

• A liquid changing into a gas

• A solid changing into a liquid

• A solid changing into a gas

What happens when a candle burns?

• The wax turns into gas and smoke

• The wax disappears

• The wax turns into ice

• The wax becomes water