11.2 classifications of chemical reactions. why do we classify things?

11.2 CLASSIFICATIONS

OF CHEMICAL REACTIONS

Why do we classify things?

TYPE #1 _________________ _______________

___________ + __________ → ____________

Also, element + compound → compound

compound + compound → compound

If there is a ________________ _______________, assume it is a synthesis reaction!

Rusting 4Fe + 3O2 → 2 Fe2O3

Here’s another type of reaction

___C3H5N3O9 →

___N2 + ___CO2 + ___H2O + __O2

Click

TYPE #3 ________________________

___NH3 → ___N2 + ___H2

___KClO3 → ___KCl + ___O2

___PbCO3 → __PbO + ___CO2

If there is a _____________________, assume it is a decomposition reaction!

2H2 + O2 → 2H2OThis is a synthesis reaction; it’s also a

_____________________reaction, which is a chemical change in which an element or product

reacts with ___________often producing

__________ & _________

This is TYPE #3. Think ___________________!One of the world’s most important chemical

reactions of all is the combustion of a

_______________________

This is the COMPLETE COMBUSTION of a hydrocarbon…

MEMORIZE THIS GENERIC EQUATION!

Type #4 ____________________________

___ Pb + ___ H2SO4 → ___ PbSO4 + ___H2

___ K2Cr2O7 + ___ AgNO3 →___KNO3 + ___Ag2Cr2O7

___HCl + ___ NaOH → ___NaCl + ___HOH Click

Classify these reactions:

a. ___NH4 NO3 → ___ N2O + ___ H2O

b. ___ Li + ___ FeSO4 → ___ Fe + Li2SO4

c. ___ C2H6 + ___ O2 → ___ CO2 + ___ H2 O

d. ___ Al + ___ F2 → ___ AlF3

e. ___ CuCl2 + ___ Na3PO4 → ___ Cu3PO4 + __ NaCl