MatterConcepts - Concepts of Matter Observations and...

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Concepts of Matter Observations and Classification MatterConcepts.wpd Chemistry is a branch of physical science that describes matter , where matter is anything that has mass and occupies space. Matter is studied for its composition, structure, physical and chemical transformations, and the energies associated with these transformations. I. Matter exists in three common states or phases : gases, liquids, and solids. A. Gas phase 1. Constituent particles (atoms, molecules) are widely separated, moving rapidly, and frequently colliding with themselves and with the walls of the container. 2. Assumes shape of the container 3. Greatly compressible B. Liquid phase 1. Particles move in a rapid, random pattern, but remain in constant contact. 2. Assumes shape of container as defined by gravity 3. Slightly compressible C. Solid phase 1. Particles are in constant contact, generally locked in a particular position with little or no translational motion. 2. Maintains a fixed shape 3. Negligible compressibility II. Matter may be differentiated as pure substances or mixtures of pure substances. A pure substance is matter that has identical properties and a constant composition throughout
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This note was uploaded on 11/16/2011 for the course CHM 2045 taught by Professor Mitchell during the Fall '07 term at University of Florida.

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MatterConcepts - Concepts of Matter Observations and...

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