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 + 3O 2 → 2 Fe 2 O 3

Here’s another type of reaction ___ C 3 H 5 N 3 O 9 → ___ N 2 + ___ CO 2 + ___ H 2 O + __O 2 Click Click

TYPE #3 ________________________

___NH 3 → ___N 2 + ___H 2 ___KClO 3 → ___KCl + ___O 2 ___PbCO 3 → __PbO + ___CO 2 If there is a _____________________, assume it is a decomposition reaction!

2H 2 + O 2 → 2H 2 O This 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 + ___ H 2 SO 4 → ___ PbSO 4 + ___H 2

___ K 2 Cr 2 O 7 + ___ AgNO 3 →___KNO 3 + ___Ag 2 Cr 2 O 7 ___HCl + ___ NaOH → ___NaCl + ___HOH Click Click

Classify these reactions: a. ___NH 4 NO 3 → ___ N 2 O + ___ H 2 O b. ___ Li + ___ FeSO 4 → ___ Fe + Li 2 SO 4 c. ___ C 2 H 6 + ___ O 2 → ___ CO 2 + ___ H 2 O d. ___ Al + ___ F 2 → ___ AlF 3 e. ___ CuCl 2 + ___ Na 3 PO 4 → ___ Cu 3 PO 4 + __ NaCl