Chemical Changes
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
