A process in which atoms of 1 or more substances rearrange to form 1 or more new substances
coefficient
chemical reaction
inhibitor
activation energy
A description of a reaction using element symbols and chemical formulas.
synthesis
chemical reaction
combustion
chemical equation
The starting substance in a chemical reaction.
reactants
products
chemical equation
catalyst
The substances produced by the chemical reaction.
reactants
oxygen
carbon dioxide
products
The total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction.
chemical equation
endothermic
chemical reaction
law of conservation of mass
A number placed in front of an element symbol or chemical formula in an equation.
foldable
equation
coefficient
number
A type of chemical reaction in which 2 or more substances combine and form 1 compound.
compound
decomposition
synthesis
substances
A type of reaction where 1 compound breaks down and forms 2 or more substances.
decomposition
synthesis
atoms
reactant
A type of chemical reaction where 1 element replaces another element in a compound.
double replacement
triple replacement
single replacement
combustion
A chemical reaction where the negative ions in 2 compounds switch places, forming 2 new compounds.
synthesis
single replacement
double replacement
combustion
A chemical reaction in which a substance combines with oxygen and releases energy.
contrast
synthesis
decomposition
combustion
Chemical reactions that absorb thermal energy.
exothermic reactions
endothermic reactions
combustion
thermal energy
A chemical reaction that releases thermal energy.
endothermic reaction
energy
exothermic reaction
reactants
The minimum amount of energy needed to start a chemical reaction.
reaction energy
activation energy
temperature
concentration
A substance that increases the reaction rate by lowering the activation energy of a reaction.
enzyme
graphic
catalyst
inhibitor
A catalyst that speeds up chemical reactions in living cells.
inhibitor
concept
enzyme
catalyst
