Types of ReactionsTypes of Reactions

Unit 7 – Chemical ReactionsUnit 7 – Chemical Reactions

Ch 11.2 pages 330-336Ch 11.2 pages 330-336

5 types of Chemical Reaction5 types of Chemical Reaction1. Synthesis: (aka. Combination)1. Synthesis: (aka. Combination)

Jane goes to the school danceJane goes to the school dance

Jane meets Bob thereJane meets Bob there

They start datingThey start dating

ex. The combination of iron and sulfur to ex. The combination of iron and sulfur to form iron (II) sulfide form iron (II) sulfide

8 Fe + S8 Fe + S88 8 FeS 8 FeS

5 types of Chemical Reaction5 types of Chemical Reaction

2. Decomposition:2. Decomposition:Jane and Bob have “issues”Jane and Bob have “issues”

Jane and Bob break upJane and Bob break up

– ex. The electrolysis of water to make oxygen ex. The electrolysis of water to make oxygen and hydrogen gas:and hydrogen gas:

2 H2 H22O O 2 H 2 H22 + O + O22

5 types of Chemical Reaction5 types of Chemical Reaction

3. Single Replacement:3. Single Replacement:Jane and Bob are dating. Jane and Bob are dating.

ex: Aluminum replaces Zinc in Zinc (II) chloride ex: Aluminum replaces Zinc in Zinc (II) chloride to make Aluminum chloride and Zinc: to make Aluminum chloride and Zinc:

Al + ZnClAl + ZnCl22 Zn + AlCl Zn + AlCl33

They meet Steve.They meet Steve.

Steve steals Jane from Bob, leaving Bob alone

5 types of Chemical Reaction5 types of Chemical Reaction4. Double Replacement:4. Double Replacement:

Jane and Bob are datingJane and Bob are datingSteve and Marcie are datingSteve and Marcie are datingThey break up and swap partnersThey break up and swap partners

ex: Reaction of lead nitrate with potassium ex: Reaction of lead nitrate with potassium iodide to form lead iodide and potassium nitrate:iodide to form lead iodide and potassium nitrate:

Pb(NOPb(NO33))22 + 2 KI + 2 KI PbI PbI22 + 2 KNO + 2 KNO33

5 types of Chemical Reaction5 types of Chemical Reaction

5.5. Combustion:Combustion:Carbon/Hydrogen source + OCarbon/Hydrogen source + O22COCO22 + H + H2200

COCO CC

Exothermic (produces heat/energy)Exothermic (produces heat/energy)You are a “carbon based” moleculeYou are a “carbon based” molecule

Breathe in – adds oxygenBreathe in – adds oxygenDigest food – burns/releases energyDigest food – burns/releases energyBreathe out – waste of carbon dioxide Breathe out – waste of carbon dioxide and waterand water

or

or

Identifying Reaction TypesIdentifying Reaction TypesIdentify what type the following reactions Identify what type the following reactions are: are: – NaOH + KNONaOH + KNO33 NaNO NaNO33 + KOH + KOH

– CHCH44 + 2 O + 2 O22 CO CO22 + 2 H + 2 H22O O

– 2 Fe + 6 NaBr 2 Fe + 6 NaBr 2 FeBr 2 FeBr33 + 6 Na + 6 Na

– CaSOCaSO44 + Mg(OH) + Mg(OH)22 Ca(OH) Ca(OH)22 + MgSO + MgSO44

– Pb + OPb + O22 PbO PbO22

– NaNa22COCO33 Na Na22O + COO + CO22

Double Repl.

Combust.

Single Repl.

Double

Synth

Decomp.

Identify Reaction Types + BalanceIdentify Reaction Types + Balance

Al + HCl Al + HCl AlCl AlCl33 + H + H22

KClOKClO33 KCl + O KCl + O22

Pb(NOPb(NO33))22 + KI + KI PbI PbI22 + KNO + KNO33

–Single ReplacementSingle Replacement

–22Al + Al + 66HCl HCl 22AlClAlCl33 + + 33HH22

–DecompositionDecomposition

–22KClOKClO33 22KCl + KCl + 33OO22

–Double ReplacementDouble Replacement

–Pb(NOPb(NO33))22 + + 22KI KI PbI PbI22 + + 22KNOKNO33

Identify Reaction Types + BalanceIdentify Reaction Types + Balance

Ethanol (CHEthanol (CH33CHCH22OH) reacts with oxygen to OH) reacts with oxygen to

produce carbon dioxide and water.produce carbon dioxide and water.

Ammonia sulfide and cobalt (II) nitrate Ammonia sulfide and cobalt (II) nitrate react to produce cobalt (II) sulfide and react to produce cobalt (II) sulfide and ammonia nitrate.ammonia nitrate.

–CombustionCombustion

–CHCH33CHCH22OH + OH + 33OO22 22COCO22 + + 33HH22OO

–Double ReplacementDouble Replacement

–(NH(NH44))22S + Co(NOS + Co(NO33))22 CoS + CoS + 22NHNH44NONO33