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25 Cards in this Set
- Front
- Back
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Element
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the simplest form/unit of matter made up of atoms
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Matter
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any object that has mass and volume
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(Pure) Substance
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any item that has chemical makeup and can be written as one formula
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Compound
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two or more elements that chemically combine to form something new
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Mixture
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two or more substances (elements or compounds) physically combined
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Homogeneous
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A substance in which all particles are the same
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Heterogeneous
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A substance in which particles are not the same
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Homogeneous Mixture
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two or more substances physically combined and evenly mixed that look the same
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Heterogeneous Mixture
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two or more substances physically combined that do not look the same
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Atomic Number
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The number of an element on the periodic table. The number of protons in the nucleus of an atom
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Atom
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Very small particle that makes up all matter.
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Atomic Weight
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The average mass of atoms of a naturally occurring element (including isotopes)
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Isotope
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Atoms with the same number of protons, but differing numbers of neutrons. Isotopes are different forms of a single element.
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Chemical Change
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Change that results in a new substance being formed
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Chemical reaction
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A chemical change in which one or more new chemical substances are produced
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Reactant
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A chemical substance used up in a chemical reaction
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Product
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A new chemical substance that results from a chemical reaction
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Physical change
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A change in which new substance is formed. Usually easy to reverse
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Precipitate
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A solid product of a chemical reaction that does not dissolve in water
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CO2
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Carbon Dioxide
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CO
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Carbon Monoxide
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C6H12O6
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Sugar
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H2O
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Water
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NaCl
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Sodium Chloride (Table Salt)
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CH2OH
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Alcohol
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