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Chapter 9 Vocab
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- 1Chemical ReactionA process in which atoms of one or more substances rearrange to form one or more new substances
- 2Chemical BondAn attraction between atoms when electrons are shared, transferred, or pooled
- 3Chemical EquationA description of a reaction using element symbols and chemical formulas
*Must be balanced*
Reactant + Reactant -> Product + Product - 4ReactantsThe starting substances in a chemical reaction
- 5ProductsThe substances produced by the chemical reaction
- 6Law of Conservation of MassThe total mass of the reactants BEFORE a chemical reaction is the same as the total mass of the products AFTER the chemical reaction
- 7CoefficientA number placed in front of an element symbol or chemical formula in an equation
- 8SynthesisTwo or more substances combine and form one compound
- 9DecompositionOne compound breaks down and forms two or more substances
- 10Single-ReplacementOne element replaces another element in a compound
- 11Double-ReplacementNegative ions in two compounds switch places, forming two new compounds
- 12CombustionA substance combines with oxygen and releases energy.
- 13EndothermicChemical reactions that absorb thermal energy
reactants + thermal energy -> products - 14ExothermicA chemical reaction that releases thermal energy
reactants -> products + thermal energy - 15Activation EnergyMinimum amount of energy needed to start a chemical reaction
*different reactions have different activation energies - 16CatalystSubstance that increases reaction rate by lowering activation energy of the reaction
- 17EnzymeA catalyst that speed sup chemical reactions in living cells
- 18InhibitorA substance that slows or stops a chemical reaction
Información
- Descripción
- Glencoe Integrated Science Grade 8
- Creado por
- Laura Renninger · ene 2018
- Actualizado
- 30 ene 2018
- Visitas
- 7
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