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Properties of a solid?
- Particles tightly packed
- They vibrate
-Do not flow easily
-Fixed shape
-Don't compress easily
Properties of a liquid?
-close together with no regular arrangement.
-liquid vibrate, move about, and slide past each other.
-is the shape of the container it is in
-not easily compressible
Can flow
Properties of gas?
-Is the shape of it's container it's in
-Compressible
-Flows easily
-Well separated particles
-move freely at high speeds
How does evaporation work?
Particles gain heat energy which allows them to turn into a gas.
How does temperature effect evaporation?
water molecules increase more rapidly
How does surface area effect evaporation?
How is evaporation affected by air flow?
Increases evaporation
How is evaporation related to consequent cooling?
Feels cooler as the evaporation takes thermal energy away.
Describe the thermal expansion of liquids, solids and gases
Solid-The relative increase in the size of solids when heated is small.
Liquid-An increase in temperature results in the expansion of the liquid which means it rises up the glass.
Gas-the volume of a gas increases more than the volume of a solid or liquid when heated.
Name some everyday examples of thermal expansion.
Railtracks expand when heated
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