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