1.a.         CH4     +          2 O2            CO2     +          2 H2O

b.         2 Cu     +          O2               2 CuO

c.         2 Be     +          O2               2 BeO

d.         Fe(NO3)2         +          2 NaOH                  Fe(OH)2          +          2 NaNO3

e.         2 NaBr +          CuCl2           2  NaCl           +          CuBr2

f.          Al2(SO4)3         +          3 Ca(OH)2              2Al(OH)3        +          3 CaSO4

g.         Pb(NO3)2         +          2 KI            2 KNO3                       +          PbI2

h.         CaCl2   +          BaF2           CaF2    +          BaCl2    balanced

i.          4Na     +          O2               2Na2O

j.          2 Li      +          2 H2O         2 LiOH            +          H2

k.         2 PbCrO4  +    16 HCl  +    6 FeSO4          2 PbCl2  +    Cr2(SO4)3    +  4 FeCl3  +  8 H2O +   Fe2(SO4)3

l.          2 NO   +          O2               2 NO2

m.        2 C      +          H2               C2H2   

n.         AlCl3   +          4NaOH                   NaAlO2  +       3 NaCl   +        2 H2O

o.         4 FeO  +          O2               2 Fe2O3

2.         Draw 1b and 1j after they have been balanced.

 

 

Li
 
j

 

 

 

 

3.         Translate 1i and 1j into words.

 

i)         4Na     +          O2               2Na2O

4 parts of sodium react with one part of oxygen to produce two parts of sodium oxide

     2 Li      +          2 H2O         2 LiOH            +          H2

2 parts of lithium react with 2 parts of water to produce 2 parts of lithium hydroxide  and 1 part of  hydrogen gas