Chemical Changes

Reactant

Substances present before the chemical change occurs

Chemical Bond

The force that holds together atoms that attach to other atoms

Product

The new substances that is produced after the chemical change

Synthesis Reaction

The type of chemical reaction where two simple elements are combined to make a more complex compound

Chemical Equation

Letters and numbers that represent the amounts of reactants and products involved in a chemical change

Endothermic Reaction

A chemical reaction that absorbs energy from its surroundings

Exothermic Reaction

A chemical reaction that releases energy by light or heat

Decomposition Reaction

A type of chemical reaction where a complex compound breaks down into two or more simpler compounds (soda)

Chemical Change

Produces new substances with chemical properties that are different from those of the original elements

Chemical Reaction

Another word for a chemical change

Conservation of Mass

The law that the chemical reactions follow

Replacement Reaction

Occurs when elements or molecules switch places forming a different compound

Name four major factors that can affect the rate at which a chemical reaction occurs

-Temperature

-Concentration

-Pressure

-Surface Area

When a physical change occurs:

No new substance is created

Chemical changes occur when:

Atoms form or break chemical bonds