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27 Cards in this Set
- Front
- Back
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Elements
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simplest form of matter and cannot be broken down chemically into simpler, stable substances
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chemical changes/ chemical reactions
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change the composition or structure of a substance
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physical changes
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do not alter composition
(breaking of glass) |
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compound
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chemical combination of elements that has its own set of properties and a definite composition
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pure substances
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compounds and elements
stems into elements and compounds |
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heterogeneous
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not the same throughout, two or more substances clearly seen with naked eye
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homogeneous
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same throughout and transparentish
solutions |
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mixtures
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two or more substances that have properties related to those of their components but that do not have definite compositions
stems into hetero and homo(solutions) |
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matter
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anything that has mass and occupies space
stems into substances and mixtures |
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properties
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the characteristics by which we can identify something
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chemical properties
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characteristic ways a substance can react to produce other substances
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physical properties
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ways a substance can be identified without changing its characteristic composition
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extensive properties
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depend on the quantity of the sample
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intensive properties
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do not depend on how much is present
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quantitative properties
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measurable intensive properties
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malleable
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able to be pounded into different shapes
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mass
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how much matter is in an object, directly proportional to weight
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energy
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capacity to do work
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law of conservation of energy
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energy cannot be created or destroyed, but it can be converted from one form to another
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period
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horizontal lines on periodic table
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groups/families
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vertical columns on periodic table
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alkali metals
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group 1, IA (not including hydrogen)
Li, Na, K, Rb, Cs, Fr |
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Alkaline Earth Metals
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group 2, IIA
Be, Mg, Ca, Sr, Ba, Ra |
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Coinage Metals
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group 11, IB
Cu, Pd, Pt |
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Halogens
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Group 17, VIIA
F, Cl, Br, I |
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Noble Gases
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Group 18, 0
He, Ne, Ar, Kr, Xe, Rn |
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Metalloids
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B, Si, As, Te, At
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