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Structure and properties of matter vocabulary

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Question
Answer
Thermal Energy   the kinetic energy of the moving particles in a substance or an object.  
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solid   Firm and stable in shape; not liquid or fluid.  
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Liquid   having a consistency like that of water or oil, i.e., flowing freely but of constant volume.  
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Gas   an airlike fluid substance which expands freely to fill any space available, irrespective of its quantity.  
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Plasma   A state of matter made up of charged atoms, uncharged atoms, and free electrons.  
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Colloid   A mixture that contains particles that are to small see.  
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Phase Change   When temperature changes, matter can undergo a phase change, shifting from one form to another.  
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Particle   a minute quantity or fragment.  
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Melting point   The temperature at which a substance changes from a solid to liquid.  
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Freezing point   The temperature at which a liquid changes into a solid.  
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Boiling point   The temperature at which a substance changes from a liquid to a gas.  
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Evaporation   The process by which a liquid changes into a gas.  
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Condensation   The process by which water vapor changes into liquid water.  
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Volume   The amount of space something takes up.  
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Mass   The amount of matter something has.  
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Density   The amount of mass something has in relation to its volume.  
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Pure substance   A material that is composed of only one type of particle. A material made up of at least two different pure substances.  
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Atom   The smallest unit of an element that still has the properties of that element.  
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Molecule   A molecule is the smallest particle in a chemical element or compound. Molecules are made up of atom s that are held together by chemical bonds.  
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Element   A substance made up of only one kind of atom.  
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Compound   A substance made up of atoms of two or more elements that are chemically combined.  
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Extended structure    
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Physical change   A change that does not make a substance into a new substance.  
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Chemical change   A change in which one or more new substances are formed.  
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Natural resource   A material that occurs in nature that is essential or useful to people.  
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Synthetic material   Synthetic fabrics are textiles made from man-made rather than natural fibers.  
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