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15 Cards in this Set
- Front
- Back
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Stoichiometry
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The calculation of quantities in chemical equations.
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Chemical Reaction
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A chemical change occurs whenever compounds are formed or decomposed.
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Chemical change
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You start with one compound and turn it into another.
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Matter
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Matter is anything that has mass
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Law of conservation of mass/matter
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matter cannot be created or destroyed, although it may be rearranged.
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Reactants
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A substance that is consumed during a chemical change
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Products
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A substance that is produced during a chemical change
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Catalysts
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Speed up the reaction, but aren’t produced or consumed.
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Synthesis
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For example, water can be synthesized from oxygen and hydrogen gas: H2(g) + ½O2(g) H2O( ).
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Decomposition
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A reaction in which a compound is broken down into simpler compounds or elements. Compounds sometimes decompose if heated strongly.
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Single replacement
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A single element changes plaace with an ion in a compound.
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Double Replacement
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A double displacement or metathesis is a reaction in which two reactants trade fragments:
AB + CD = AC + BD Most commonly, the fragments are ions, e. g. AgNO3(aq) + NaCl(aq) = AgCl(s) + NaNO3(aq) |
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Combustion
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When substances combine with oxygen and release energy.
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Atoms
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An atom is the smallest particle of an element that retains the chemical properties of the element.
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Composition
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More than one type of matter combine to form one type of matter.
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