Chem 9.1-2

Synthesis Reaction

A reaction in which two or more substances react to produce a single product.

Combustion Reaction

A reaction where oxygen combines with a substance, releasing energy in the form of heat and light.

Decomposition Reaction

A reaction in which a single compound breaks down into two or more elements or new compounds.

Single-Replacement Reaction

A reaction where atoms of one element replace the atoms of another element in a compound.

Double-Replacement Reaction

A reaction where ions exchange between two compounds.

Precipitate

The solid product produced during a chemical reaction in a solution.

Chemical Reaction

The process by which one or more substances are rearranged to form different substances.

Evidence of Chemical Change

Indicators that a chemical reaction may have occurred, such as a change in temperature, color, odor, gas bubbles, or the appearance of a solid.

Reactant

The starting substances in a chemical reaction.

Product

The substances formed in a chemical reaction.

Chemical Equation

A statement that uses chemical formulas to show the identities and relative amounts of the substances involved in a reaction.

Coefficient

A number written in front of a reactant or product in a chemical equation, indicating the lowest whole-number ratio of the amounts of all the reactants and products.

Balanced Chemical Equation

An equation that follows the law of conservation of mass, ensuring that the number of atoms of each element is equal on both sides.

Skeleton Equation

An equation that uses symbols and formulas to represent the reactants and products without the coefficients.