Science test 12/4
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a number placed in front of element symbol or chemical formula in an equation
coefficient
substance in a chemical reaction
reactant
substance that slows down or stops a chemical reaction
inhibitor
lowers the activation energy of a reaction and increaes the reaction rate
catalyst
reaction that occurs when a substance combineswith oxygen and releases energy
combustion
require activation energy to get started
endotheric/exothermic reaction
what would cause a reaction to occur more quickly
increasing the surface area of a solid reactant
When chemical bonds in the reactant are broken energy is absorbed during which type of reaction
both exothermic and endothermic reactions
cannot be formed during a chemical reaction
atoms
In a reaction that has one reactant and two products the mass?
mass of the products is equal to the mass of the reactants
A single-replacement reaction has
two reactants and two products