Mastering Chemical Formulas For Ionic Compounds

This video tutorial explains how to write chemical formulas for ionic compounds. It covers examples with equal and unequal charges, polyatomic ions, and transition metals using Roman numerals. The tutorial provides step-by-step instructions and examples, including lithium chloride, calcium sulfide, magnesium bromide, and more complex ions like aluminum sulfate and strontium phosphate. The video aims to simplify the process of writing chemical formulas by using the crisscross method and understanding the charges of ions.

What is the chemical formula for lithium chloride?

• LiCl

• Li2Cl

• LiCl2

• Li2Cl2

How do you write the formula for magnesium bromide?

• Mg2Br2

• MgBr2

• MgBr

• Mg2Br

What is the correct formula for sodium sulfide?

• NaS

• Na2S2

• Na2S

• NaS2

How do you write the chemical formula for aluminum sulfate?

• Al(SO4)3

• Al3(SO4)2

• Al2(SO4)3

• AlSO4

What is the formula for strontium phosphate?

• SrPO4

• Sr(PO4)3

• Sr2(PO4)3

• Sr3(PO4)2

How do you determine the charge of iron in iron(II) chloride?

• +4

• +3

• +2

• +1

What is the chemical formula for iron(III) nitrate?

• Fe(NO3)3

• Fe3(NO3)2

• Fe(NO3)2

• Fe2(NO3)3

What is the formula for copper(I) phosphate?

• Cu3PO4

• Cu3(PO4)

• CuPO4

• Cu(PO4)3

How do you write the formula for tin(IV) selenide after reducing subscripts?

• Sn2Se

• SnSe2

• Sn2Se4

• SnSe

What is the chemical formula for vanadium(V) oxide?

• VO2

• V5O2

• V2O5

• VO5