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TuesdayJanuary 25, 2011
(Types of Chemical Reactions; Predicting the Products of
Chemical Reactions)
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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)
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Announcements
We will have a test this Friday.
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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
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Types of Chemical Reactions
Synthesis Reactions
Decomposition Reactions
Single-Replacement Reactions
Double-Replacement Reactions
Combustion Reactions
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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
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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
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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
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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
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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
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WorksheetChemical Reactions and Equations Part 3