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13.1 and 14 Gases
Question | Answer |
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Kinetic energy | The energy an object has because of its motion. |
Kinetic theory | a theory explaining the states of matter, based on the concept that all matter consists of tiny particles that are in constant motion. |
Gas pressure | Results from the force exerted by a gas per unit surface area of an object; due to collisions of gas particles with the object. |
Vacuum | a space where no particles of matter exist. |
Atmospheric pressure | the pressure exerted by atoms and molecules in the atmosphere surrounding Earth, resulting from collisions of these particles with objects. |
Pascal | the SI unit of pressure. |
Compressibility | a measure of how much the volume of matter decreases under pressure. |
Diffusion | the tendency of molecules to move toward areas of lower concentration until the concentration is uniform throughout. |