Chemical Changes

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The symbol for the word yields in chemical reaction is an

Arrow

A number written just to the left of a formula is called a

Coefficient

2H2 + O2 --> 2H2O

Combustion Reaction

Oxygen combines with a substance and releases energy in the form of heat and light.

Combustion Reaction

AXBY --> AX + BY

Decomposition Reaction

A chemical change in which there is an exchange of ions between two compounds is called a

Double replacement reaction

Any such changed that is called by the flow of an electric current is called

Electrolysis

A chemical equation in which energy is released is called an

Exothermic Reaction

A solid substance produced by such a reaction in a liquid medium is called a

Precipitate

Any substance written to the right of the arrow is called a

Product

A chemical change in which a free element replaces and releases another element in a compound is called a

Single Replacement reaction

2Na + Cl2 --> 2NaCl

Synthesis Reaction

A chemical change in which two or more substances combine to form a more complex substance is called is called a

Synthesis reaction

A chemical change in which energy is absorbed is called an

Endothermic reaction

A chemical reaction can be represented by means of a written statement called a

Chemical equation

If the change is caused by heat supplied to the reaction, the Greek symbol _________ is often written above the yields symbol in the equation.

Delta

Balanced equations show this law.

Law of Conservation of Mass

Any substance written to the left of the arrow symbol is called a

Reactant

Any charged particle that is present but that does not change or react during a reactant is usually omitted from the equation; is called a

Spectator

A change in which a substance is broken down into simpler substances is called an

Analysis reaction

AX + BY --> AY + BX

Double Replacement

A + BX --> AX + B

Single Replacement Reaction

Another name for a chemical change is a

Chemical reaction

An equation that shows the reaction or production of such particles is called an

Ionic equation


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