TuesdayJanuary 25, 2011

(Types of Chemical Reactions; Predicting the Products of

Chemical Reactions)

Bell RingerTuesday, 1-25-11

Write the word equation, then write and balance the formula equation.

Solid iron (III) oxide reacts with carbon monoxide gas to produce solid iron metal and carbon dioxide gas.

2 33

iron (III) oxide + carbon monoxide æ iron + carbon dioxide

Fe2O3(s) + CO(g) → Fe(s)+ CO2(g)

Announcements

We will have a test this Friday.

Assignment Currently Open Date Issued Date Due

WS: Chemical Reactions and EquationsPart 1 1/19 1/26

WS: Word Equations and Formula Equations 1/20 1/27

Quiz: Word Equations and Formula Equations 1/21 1/21

WS: Chemical Reactions and EquationsPart 2 1/24 1/28

Types of Chemical Reactions

Synthesis Reactions

Decomposition Reactions

Single-Replacement Reactions

Double-Replacement Reactions

Combustion Reactions

Synthesis ReactionsIn synthesis reactions (also called

addition reactions), two or more substances combine to form a new

compound.

A + X → AX2Mg + O2 → 2MgO2H2 + O2 → 2H2O

16Rb + S8 → 8Rb2SCaO + H2O → Ca(OH)2

Decomposition ReactionsIn a decomposition reaction, a single compound undergoes a reaction that

produces two or more simpler substances.

AX → A + X2H2O → 2H2 + O2

2HgO → 2Hg + O2

2KClO3 → 2KCl + 3O2

Single-Replacement Reactions

In a single-replacement reaction, one element replaces a similar element

in a compound.

A + BX → AX + B

Mg + 2HCl → MgCl2 + H2

Cl2 + 2KBr → 2KCl + Br2

2Al + 3Pb(NO3)2 → 3Pb + 2Al(NO3)3

Double-Replacement Reactions

In a double-replacement reaction, the ions of two compounds exchange

places in an aqueous solution to form two new compounds.

AX + BY → AY + BX

HCl + NaOH → NaCl + H2O

2KI + Pb(NO3)2 → PbI2 + 2KNO3

FeS + 2HCl → H2S + FeCl2

Combustion ReactionsIn a combustion reaction, a carbon-containing substance combines with oxygen to produce carbon dioxide and water, and releasing a large

amount of energy in the form of light and heat.

CX + O2 → CO2 + H2O

CH4 + 2O2 → CO2 + 2H2OC3H6 + 5O2 → 3CO2 +

4H2O

WorksheetChemical Reactions and Equations Part 3