Question

Questions
Explain why a solid expands when it is heated.
2 Explain how the liquid in a thermometer changes so that it can bc used to
3 Use particle theory to explain why solids and liquids cannot be compressed
measure a temperature.
(squashed into a smaller volume).
4 Use particle theory to explain why liquids and gases can flow.Questions
5 Explain, using particle theory, how a liquid changes to a gas.
6 Explain, using particle theory, how a liquid changes to become a solid.
7 Explain, using particle theory, what happens when steam in the bathroom
hits a cold surlace, such as a mirror.
8 Copy the flow chart. The arrows represent the processes involved when
matter changes state. Add the name for each process to your flow chart
gas
liquid
solid
B
A
gas
liquid
solid
C
D
(
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Answer 1

Answer:

All three states of matter (solid, liquid and gas) expand when heated. The atoms themselves do not expand, but the volume they take up does. When a solid is heated, its atoms vibrate faster about their fixed points. The relative increase in the size of solids when heated is therefore small.