(a) A gas is blown into a balloon. The balloon changes shape.
Why does the balloon change shape?
Tick (v) the box next to the correct answer.
The particles of the gas expand to fill the space.
The particles of the gas get bigger.
The particles of the gas hit the surface of the balloon more often.
The particles of the gas slow down.
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... They are locked into place, and this explains why solids have a fixed shape. ... Gases spread out quickly to fill all the space available to them. ... The air that you blow into the balloon fills up the whole balloon. A gas ... The glass on the right is empty.
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