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Published byShauna O’Connor’ Modified over 9 years ago
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Ch. 2 - Matter I. States of Matter Kinetic Molecular Theory States of Matter
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Definitions: Matter- anything that has mass and takes up space. Mass- the amount of matter the object contains. Which has a greater mass?
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A. Kinetic Molecular Theory Particles of matter are always in motion. The kinetic energy (KE) or speed of these particles increases as temperature increases. Bouncy Ball Example
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B. Three States of Matter Solids very low KE - particles vibrate but can’t move around fixed shape fixed volume
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B. Three States of Matter Liquids low KE - particles can move around but are still close together variable shape fixed volume
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B. Three States of Matter Gases high KE - particles can separate and move throughout container variable shape variable volume
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Plasma Plasma high temperature state in which atoms lose their electrons Ex. the sun B. States of Matter
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Properties of the States of Matter Property SolidLiquidGas Shape Volume Expansion on heating Compressibility Definite Very Slight Almost incompressible Indefinite Definite Moderate Almost incompressible Indefinite Great Readily compressible
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Changes of State Melting – solid to liquid Freezing - liquid to solid Vaporization – liquid to gas Condensation – gas to liquid Sublimation – solid to gas Deposition- gas to solid
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Changes of State The same substance can transform into each state of matter by increasing or decreasing in energy. Sublimation Deposition Melting Vaporization Freezing Condensation
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