Chapter 21.txt

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• fileName "Chapter 21"
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• Chemical reaction
• Process in which one or more substances are changed into new substances

In a chemical reaction, the substance that reacts

In a chemical reaction, the new substance that is formed.

Shorthand method to describe chemical reactions using chemical formulas and other symbols

Number in a chemical equation that represents the number of units of each substance taking part in a chemical reaction

Chemical equation with the same number of atoms of each element on both sides of the equation

A type of chemical reaction thay occurs when a substance reacts with oxygen to produce energy in the form of heat and light

Chemical reaction in which two or more substances combine to form a differant substance

Chemical reaction in which one substance breaks down into two or more substances

Chemical reaction in which one element replaces another element in a compound

Chemical reaction that produces a precipitate, water, or gas when two Ionic compounds in solution combined

Insoluble compound that comes out of solution during a double-displacement reaction.

The loss of electrons from the atoms of a substance

The gain of electrons by the atoms of a substance

Chemical reaction that releases some form of energy, such as light or heat.

Chemical reaction in which energy is primarily given off in the form of heat

Chemical reaction that requires energy input in order to proceed

Chemical reaction that requires heat energy in order to proceed

Substance that speeds up a chemical reaction without being permanently changed itself.

Substance that slows down a chemical reaction or prevents it from occuring by combining with a reactant