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STATES OF MATTER •The Four States of Matter •Four States •Solid •Liquid •Gas •Plasma STATES OF MATTER Based upon particle arrangement Based upon energy of particles Based upon distance between particles Kinetic Theory of Matter Matter is made up of molecules which are in continual random motion. STATES OF MATTER SOLIDS •Molecules of solids are tightly packed, vibrating about a fixed position. •Solids have a definite shape and a definite volume. Heat STATES OF MATTER LIQUID Molecules of liquids are tightly packed, but not as much as solids Liquids have a definite volume but take the shape of their container. Heat STATES OF MATTER GAS Molecules of gases are very far apart and move freely. Gases have indefinite volume and take the shape of their container. Heat Mass • The amount of matter something has • Measured in grams Volume • How much space something takes up • Measured in liters or cm-3 Length • Distance between 2 points • Measured in Meters Physical Properties • Properties that can be observed without changing a substance • Examples Physical Properties • Properties that can be observed without changing a substance • Examples • Color, odor, hardness, shine, conduct electricity, magnetic • STATE or PHASE • density Density • What is density? Density • What is density? • The amount of mass in a certain amount of space Density • You can even determine the relative densities of liquids by the layers that are formed when they are mixed, or what floats upon what. • More dense substances sink. • Less dense substances float. Physical Changes PHASE CHANGES Description of Phase Change Solid to liquid Term for Phase Change Melting Liquid to Freezing solid Heat Movement During Phase Change Heat goes into the solid as it melts. Heat leaves the liquid as it freezes. PHASE CHANGES Description of Phase Change Term for Phase Change Heat Movement During Phase Change Vaporization, Liquid to which includes Heat goes into the gas boiling and liquid as it vaporizes. evaporation Heat leaves the gas Gas to liquid Condensation as it condenses. Heat goes into the Solid to gas Sublimation solid as it sublimates. But what happens if you raise the temperature to super-high levels… between 1000°C and 1,000,000,000°C ? Will everything just be a gas? STATES OF MATTER PLASMA A plasma is a gas that the electrons and neutrons are free from the atom. A plasma is a very good conductor of electricity and is affected by magnetic fields. Plasmas, like gases • Plasma is the have an indefinite common state shape and an of matter indefinite volume. STATES OF MATTER SOLID Tightly packed, in a regular pattern Vibrate, but do not move from place to place LIQUID Close together with no regular arrangement. Vibrate, move about, and slide past each other GAS Well separated with no regular arrangement. Vibrate and move freely at high speeds PLASMA Has no definite volume or shape and is composed of electrical charged particles Some places where plasmas are found… 1. Flames 2. Lightning 3. Aurora (Northern Lights) The Sun is an example of a star in its plasma state COLD PLASMA COLD PLASMA PEN