Chemical Reactions Flashcards
is an expression that uses
chemical formulas and other symbols to illustrate
what reactants constitute the starting materials in a
reaction and what products are formed.
chemical equation
the reactants are written to the
left
the products are written to the
right
show the number of molecules of
a given element or compound that react or are
formed.
Coefficients
states that
atoms cannot be created or destroyed in a
chemical reaction.
the law of conservation of mass
are used to balance an equation
coefficents
symbols used in chemical equatios meaning
—–>
reaction arrow
symbols used meaning (s) (l) (g) (aq)
solid
liquid
gas
aqueous solution
types of chemical reaction
- Combination or Synthesis
- Decomposition
- Single Replacement Reaction
- Double Replacement Reaction
- Combustion
- Reduction-Oxidation Reaction
two or more substances react to form a single product
Combination or Synthesis
a single compound breaks down into two or more simpler substances (elements or compounds)
Decomposition
•one element replaces another element in a compound
- more active element replaces less active element
- Refer to activity series of elements
single displacement
Reaction of a compound with excess oxygen in the presence of heat that results in the release of heat or light energy.
Combustion Reaction
2 types of combustion
- complete
* incomplete
Also called “clean combustion,”
complete combustion