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7 Cards in this Set
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- Back
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how do you workout pressure (pa) |
Pressure = Force /Area |
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Air pressure |
Air pressure is equal in all directions. Air pressure is caused by the force of air gas particles colliding. |
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What are the three factors that affect gas pressure? |
temperature- higher temp particles have more energy creates more collisions creates more pressure volume - bigger volume more space less collision less pressure number of particles- more particles more collisions higher pressure |
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boules law |
The higher the pressure, the __s_m_a_ll_e_r __ the volume. • Boyles Law tells us about the relationship between the volume of a gas and its pressure at a constant temperature. • The law states that pressure is inversely proportional to the volume of the gas. |
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inversely proportional |
• More specifically, when one value doubles, the other value halves |
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p x V = constant P1V1 = P2V2 |
where P1 and V1 are the initial pressure and volume values, and P2 and V2 are the values of the pressure and volume of the gas after the change. |
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recap |
• Particles collide with the walls exerting a force. • Decreasing the volume means more collisions each second. • More collisions each second causes a greater force. (May also cause an increase in the internal energy of the gas). |
