acid - Substance that tastes sour, reacts with metals and carbonates and turn blue litmus red, base - Substances that taste bitter, do not react with metals or carbonates and turn red litmus blue, activation energy - The minimal amount of energy needed to start a chemical reaction, Antoine LaVoiser - Person who discovered the idea of conservation of mass, Dmitri Mendeleev - Person who created the first periodic table, Marie Curie - Person who discovered radioactiivty, atomic mass - The average mass of all the isotopes of an element, atomic number - The number of protons in the nucleus of an atom, chemistry - The study of matter and how it changes, chemical equation - Shorthand way to write a reaction using symbols, chemical change - Change in matter where one substance changes into another, physical change - Change in matter that changes what the matter looks like, chemical symbol - One or two letters that represent an element, freezing - Change in state from a liquid to a solid, melting - Change in state from a solid to a liquid, vaporization - Change in state from a liquid to a gas, sublimation - Change in state directly from a solid to a gas, condensation - Change in state from a gas to a liquid, malleable - Property of metals that allows them to be hammered into sheets, ductile - Property of metals that allows them to be pulled into wires, conductive - Property of metals that allows them to transfer heat and electricity, noble gas - Group of elements that is unreactive, alkali metals - Most reactive group of metals, halogens - Most reactive group of elements on the periodic table, mass - The amount of matter in an object, density - The amount of matter in a given volume, mixture - Two or more substances in the same place at the same time but not chemically combined, solution - Mixture containing a solvent and at least one solute, suspension - Mixture in which the particles can be seen and easilty seperated by settling or filtration, colloid - Mixture containing small, undisovled particles that do not settle out, electron - Negative particle on the outside of the nucleus of an atom, proton - Positively charged particle in the nucleus of an atom, neutron - Particle in the nucleus of an atom with no charge, heterogenous - Mixture that is not evenly mixed and you can not see the parts, homogeneous - Mixture that is evenly mixed and you can not see the parts, products - What you get after a reaction takes place, reactants - What you have before a reaction starts, metalloid - Element that has some characteristics of both metals and nonmentals, alloy - Mixture of two or more elements, one of which is a metal, solid - State of matter that has definite shape and volume, liquid - State of matter that has definite volume but no definite shape, gas - State of matter that has no definite shape or volume,
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Exam Review - Balloon Pop
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