chemical equations

Ionic Compound formula writing

100

Sodium chloride

NaCl

200

Magnesium chloride

MgCl2

300

Ammonium sulfide

(NH4)2S

400

Calcium carbonate

CaCO3

500

Iron(III) phosphite

Fe3(PO3)2

MolecularCompound formula writing

100

Water

H20

200

dinitrogen monoxide

N₂O

300

tetrachloride

CCl4

400

triphosphorus pentanitride

P3N5

500

heptasulfide 

P4S7

Chemical Equationwriting(unbalanced)

100

Hydrochloric acid reacts with a solution of potassium carbonate to produce carbon dioxide gas, water, and a solution of potassium chloride

2HCl+K2CO3→CO2+H2O+2KCl

200

A solution of iron(III) nitrate reacts with sodium phosphate solution to form a precipitate of iron(III) phosphate and a solution of sodium nitrate

2Fe(NO3)3(aq)+2Na3PO4(aq)→2FePO4(s)+6NaNO3(aq)

300

Calcium metal reacts with water to produce calcium hydroxide solution and hydrogen gas

Ca (s)+2H2O (l)→Ca(OH)2(aq)+H2(g

400

Aluminum foil reacts with a solution of copper(II) sulfate to produce aluminum sulfate solution and solid copper

2Al (s)+3CuSO4(aq)→Al2(SO4)3(aq)+3Cu (s)

500

Aqueous lead(II) nitrate reacts with a solution of potassium iodide to form a yellow precipitate of lead(II) iodide and a solution of potassium nitrate

Pb(NO3)2(aq)+2KI(aq)→PbI2(s)+2KNO3(aq)

Chemical equation balancing

100

H2+O2→H2O

2H2+O2→2H2O

200

Fe+O2→Fe2O3

4Fe+3O2→2Fe2O3

300

C3H8+O2→CO2+H2O

C3H8+5O2→3CO2+4H2O

400

Al+Fe2O3→Al2O3+Fe

2Al+Fe2O3→Al2O3+2Fe

500

Na+Cl2→NaCl

2Na+Cl2→2NaCl