What happens to the balloon when the bottle is placed in hot water?

• The balloon deflates.

• The balloon remains unchanged.

• The balloon pops.

• The balloon inflates.

What causes the balloon to deflate when the bottle is placed in cold water?

• The balloon material shrinks.

• The air pressure outside increases.

• The particles inside the bottle contract.

• The particles inside the bottle expand.

Which of the following is an exception to the general rule of contraction?

• Oxygen

• Helium

• Carbon dioxide

• Water

What happens to water when it freezes?

• It evaporates.

• It remains the same.

• It contracts.

• It expands.

What is the general behavior of particles when matter expands?

• Particles move closer together.

• Particles spread out.

• Particles remain stationary.

• Particles disappear.