chemical reaction parts are mixed together to make something new
TRANSCRIPT
Chemical Reaction
parts are mixed together to make something new
Types of Reactions1. Synthesis reactions
2. Decomposition reactions
3. Single displacement reactions
4. Double displacement reactions
You need to be able to identify each type.
1. Synthesis
Example C + O2
OO C + O O C
General: A + B AB
Ex. Synthesis Reaction
Synthesis
• Predict the products.
Na(s) + Cl2(g)
Mg(s) + F2(g)
Al(s) + F2(g)
NaCl(s)
MgF2(s)
AlF3(s)
22
2 3 2
Synthesis = join together
2. Decomposition
Example: NaCl
General: AB A + B
Cl Na Cl + Na
Ex. Decomposition Reaction
Decomposition
• Predict the products.
HgO
2KClO3
Hg2 + O2
2KCl + 3O2
2
Decomposition = split apart
3. Single DisplacementExample: Zn + CuCl2
ZnClCl Cu +
General: AB + C AC + B
ClCl Zn Cu+
Ex. Single Replacement Reaction
Single Replacement Reactions
• Predict the products.
Cl2 + 2NaBr 2NaCl + Br2
A A BBC C
2HgO + Cl2 2HgCl + O2
4. Double displacement
Example: MgO + CaS
General: AB + CD AD + CB
SOMg Ca
+O S
Mg Ca+
Single Replacement Reactions
• Predict the products.
CuCl2 + H2S CuS + 2HCl
BaCl2 + Na2SO4 2NaCl + BaSO4
join together
A + B AB
split apart
AB A + B
trade 1 placeAB + C AC + B
trade 2 placesAB + CD AC + BD
Which type of reaction?
4 P + 5 O2 P4O10
Which type of reaction?
Cl2 + 2NaBr 2NaCl + O2
Which type of reaction?
BaCl2 + Na2SO4 2NaCl + BaSO4
Which type of reaction?
2 HgO + Cl2 2HgCl + O2
Which type of reaction?
2 Al2O3 4 Al + 3 O2
Which type of reaction?
CuCl2 + H2S CuS + 2HCl
Which type of reaction?
3 H2 + N2 2 NH3
Which type of reaction?
2 HgO 2Hg + O2