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| style="height:20px; width:200px; text-align:center;" |The [[Particle Model|particle model]] of a [[gas]] showing the particles as red balls and their speed and direction shown by the arrows. The longer the arrows the faster they are moving.
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: The '''gas pressure''' can be increased in two ways.
{| class="wikitable"
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|[[File:GasPressure2.png|center|300px]]
|[[File:GasPressure3.png|center|300px]]
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| style="height:20px; width:200px; text-align:center;" |Increasing the [[temperature]] of the [[gas]] which makes the [[particle]]s move faster. This causes the particles to hit the walls of the container more often and with a greater [[force]].
| style="height:20px; width:200px; text-align:center;" |Increasing the number of particles in the container.
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