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