kinetic particle theory of matter

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9 Terms

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theory of matter
the idea that all matter is made of small, moving particles that vary in form of movement and particle arrangement
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gas pressure
produced by atoms or molecules of gas hitting the side of the container
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solid
the particles are packed close together in a regular lattice, the particles don’t move freely yet they vibrate in their place
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liquid
the particles are closely packed together in an irregular arrangement, the particles are able to move past each other
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gas
the particles have a totally irregular arrangement and are spread very far apart, they are able to move randomly
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intermolecular space
the space between atoms or molecules in a liquid or gas, the more intermolecular space there is, the easier it is to be compressed
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intermolecular forces
the weak attractive forces that act between molecules
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exothermic changes
a process or chemical reaction in which heat energy is produced and released
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endothermic changes
a process or chemical reaction in which heat energy is taken from the surroundings