Chemical Reactionsfun for all

SynthesisA + B AB Magnesium + ChlorineMg2+ + Cl1- The ionic charge of Mg is 2+ because it must give away two electrons to reach a stable electron configurationChlorine is 1- because it gains one electron

SynthesisA + B AB

Mg2+ + Cl1- MgCl2

butthe chemical reaction is not balanced(i.e., number of products does not equal number of reactants)so

Mg + 2Cl MgCl2

SynthesisA + B AB Try another practice is goodAluminum reacts with fluorine

Al + F

Al + F Al3+ + F1-Al + F AlF3

Al + 3F AlF3

Compound name is Aluminum fluoride

SynthesisA + B AB Another oneyippeeCalcium mixes with oxygen

Ca + O2

Ca + O2 Ca2+ + O22-Ca + O2 CaOCa + O2 2CaO

2Ca + O2 2CaO2

Compound name is Calcium oxide

SynthesisA + B AB MOREPotassium reacts with sulfur

K + S

K + S K1+ + S2-K1+ + S2- K2S

2K + S K2 S

Compound name is Potassium sulfide

SynthesisA + B AB Again we do thisCopper II reacts with fluorine

Cu + F

Cu + F Cu2+ + F1-Cu2+ + F1- CuF2

Cu + 2F CuF2

Compound name is Copper II fluoride

SynthesisA + B AB Yet, againLead IV reacts with oxygen

Pb + O

Pb + O Pb4+ + O2-Pb4+ + O2- PbO2

Pb + 2O PbO2

Compound name is Lead IV oxide

SynthesisA + B AB LastlyIron III reacts with oxygen

Fe + O

Fe + O Fe3+ + O2-Fe3+ + O2- Fe2O3

2Fe + 3O Fe2O3

Compound name is Iron III oxide

For good online practice.

Go to MacGraw-Hill Science

http://glencoe.mcgraw-hill.com/sites/0078600510/student_view0/unit5/chapter20/math_practice.html