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1_Introduction - Introduction Chapter 0 CHEM 300 NCG There...

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Introduction Chapter 0 CHEM 300 NCG
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There are three physical states (forms) of matter • Gas Fills the container it occupies Particles are widely separated and in rapid, disordered motion. • Liquid Possesses a well-defined surface and fills the lower part of the container it occupies. Particles are in contact but able to move in a restricted manner. • Solid Retains its shape regardless of the shape of the container. Particles are in contact and only rarely able to move past each other.
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The state of matter can be defined by physical form and its state properties • Physical form gas, liquid solid • Physical properties volume, pressure, temperature, amount
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Pressure is the force applied over a certain area • p = F / a • There are a large number of units of pressure Pascal (Pa) = 1 N m -2 1 bar = 105 Pa 1 atm = 1.013 bar = 760 Torr
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Temperature is a property of an object and is not the same as heat.
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