Chemistry Ch. 6

Reactant

A substance that undergoes a reaction.

Product

A substance that is formed from a chemical change.

Coefficient

Indicates how many units are involved in an equation.

Synthesis

When two or more substances combine to form a single product.

Decomposition

Compound that breaks down into two or more simpler substances.

Single Displacement

When one element takes the place of another in a compound.

Double displacement

When two ionic compounds are interchanged.

Combustion

When one substance rapidly combines with oxygen to form one or more oxides.

Equilibrium

When no net changes occur in reactants and products.

Dynamic Equilibrium

Opposite actions are taking plac at the same rate.

Soluble

When a compound dissolves in a liquid.

Insoluble

When a compound does not dissolve in a liquid.

Activation Energy

The amount of energy the particles in a reaction must have when they collide for the reaction to occur.

Concentration

The amount of substance present in a certain volume.

Limiting Reactant

The reactant of which there is not enough.

Catalyst

A substance that speeds up the rate of the reaction without being changed or used up.

Enzymes

A biological catalyst.

Inhibitor

A substance that slows down a reaction.