Transcript Types of Chemical Reactions

Types of Chemical Reactions
121.Synthesis
• when two or more elements
combine to form a compound.
A + B → AB
Example:
8 Fe + S8 → 8 FeS
122. Decomposition
• a compound breaks down to
make simpler ones.
AB → A + B
Example:
2 H 2 O → 2 H 2 + O2
123. Single replacement
• An element trades places with
another element in a compound.
A + BC → AC + B
Example:
Mg +2 HCl→ MgCl2 + H2
124. Double replacement
• two elements switch places, forming
two new compounds.
AB + CD → AD + CB
Example:
PbBr2 + 2 KCl → PbCl2 + 2 KBr
125. Combustion
• when oxygen combines with another
compound to form water and carbon
dioxide.
• These reactions require oxygen.
CH + O2 → CO2 + H2O
Example:
C10H8 + 12 O2 → 10 CO2 + 4 H2O
126. Neutralization or acid/base
when an acid and base react with each
other causing the formation of water.
H A + B OH ---> H2O + BA
Example:
HBr + NaOH ---> NaBr + H2O
Identify the following chemical equations by
type.
C4H8 + 6O2 ---> 4CO2 + 4H2O _______
HCl + NaOH ---> H2O + NaCl _______
2KNO3 ---> 2KNO2 + O2 _______
AgNO3 + NaCl ---> NaNO3 + AgCl _______
2Mg + O2 ---> 2MgO _______
MgCO3 ---> MgO + CO2 _______
Cl2 + 2KBr ---> 2KCl + Br2 _______
2Ag + S ---> Ag2S _______
A.
B.
C.
D.
E.
F.
Double replacement
Combustion
Single replacement
Synthesis
Neutralization
Decomposition