Classifying Chemical ReactionsEQ – How do chemical reactions satisfy the law of conservation?

Synthesis ReactionsTwo or more elements or compounds combine to

make a more complex substance

A + B AB

H2 + O2 H2O2

Decomposition ReactionsCompounds break down into simpler substances

AB A + B

2H2O H2 + O2

Single Replacement ReactionOccurs when one element replaces another one in a

compoundAlso called Single displacement reaction

AB + C AC + B

Fe+ HCl FeCl + H

Double Replacement ReactionOccurs when different atoms in two different

compounds trade places Also called double displacement reaction

AB + CD AD + CB

KCl + H2O K2O4 + HCl

What type of reactions are these?

Reaction Type

Cu + 2AgN3 CuN2 + 2Ag

FeS + HCl FeCl2 + H2S

8 Fe + S8 8 FeS

2 KCl → 2 K + Cl2

NiCl2 Ni + Cl2

Zn + HCl ZnCl + H2Single Replacement

Single Replacement

Double Replacement

Synthesis

Decomposition

Decomposition

Can you do it all? (BON)01. Iron (III) oxide plus water yields iron (III)

hydroxide.

02. In a displacement reaction, potassium hydroxide reacts with hydrogen sulfate to produce dihydrogen oxide and what?

What has to be done? How will you make certain the Law of Conservation of Mass is followed? What type of reactions are these?

Answers:0TO DO: Write the equation. Make sure the formulas are

correct. Balance the equation. Decide what type of equation it is.

0Fe2O3 + H2O Fe (OH)

0KOH + H2SO4 -> K2SO4 + HOH0 BAL: 2KOH + H2SO4 -> K2SO4 + 2H2O

0 BAL: Fe2O3 + 3 H2O 2 Fe (OH)3