Worksheet: Compound Names and Formulas

In this worksheet, we will practice interconverting compound names and formulas by deducing the stoichiometry and oxidation states of constituent elements.

Q1:

What is the name of the compound with the formula KO2?

  • ADipotassium oxide
  • BDipotassium oxalate
  • CPotassium oxalate
  • DPotassium hydroxide
  • EPotassium oxide

Q2:

What is the formula of magnesium selenide?

  • A M g S e 2 3
  • B M g S e
  • C M g S e 2
  • D M g S e 3
  • E M g S e 2

Q3:

What is the formula of sodium oxide?

  • A N a O 2 3
  • B N a O 2
  • C N a O 2
  • D N a O
  • E N a O 3 2

Q4:

What is the formula of hydrogen fluoride?

  • A H F 3
  • B H F 2
  • C H F 2
  • D H F
  • E H F 2 3

Q5:

What is the formula of gallium phosphide?

  • A G a P 3
  • B G a P 3
  • C G a P
  • D G a P 2
  • E G a P 3 2

Q6:

What is the formula of aluminum bromide?

  • A A l B r 2 3
  • B A l B r 3
  • C A l B r
  • D A l B r 2
  • E A l B r 2

Q7:

What is the formula of ammonium carbonate?

  • A N H C O 4 3
  • B ( N H ) C O 4 3 3
  • C ( N H ) ( C O ) 4 2 3 3
  • D N H ( C O ) 4 3 2
  • E ( N H ) C O 4 2 3

Q8:

What is the formula of chlorine dioxide?

  • A C l O
  • B C l O 2
  • C C l O 3 2
  • D C l O 4 2
  • E C l O 3

Q9:

What is the formula of dinitrogen tetroxide?

  • A N O 2
  • B N O 2 4
  • C N O 2 3
  • D N O
  • E N O 2

Q10:

What is the formula of potassium phosphide?

  • A K P 2
  • B K P 3 2
  • C K P 3
  • D K P 2
  • E K P

Q11:

What is the formula of silver(I) sulfide?

  • A A g S 3 2
  • B A g S 2
  • C A g S 2 3
  • D A g S 2
  • E A g S

Q12:

What is the formula of aluminum nitride?

  • A A l N 3
  • B A l N 2
  • C A l N 2 3
  • D A l N
  • E A l N 2

Q13:

What is the formula of silicon dioxide?

  • A S i O 2 3
  • B S i O 2
  • C S i O 4 2
  • D S i O 3 2
  • E S i O

Q14:

What is the name of the compound with the formula CrO23?

  • AChromium(III) oxide
  • BChromium oxide(II)
  • CChromium oxide(III)
  • DChromium(II) oxide
  • EChromium(IV) oxide

Q15:

What is the name of the compound with the formula FeCl2?

  • AIron(II) chloride
  • BIron(IV) chloride
  • CChlorine ferrate(II)
  • DIron(III) chloride
  • EChlorine ferrate(IV)

Q16:

What is the name of the compound with the formula CrO3?

  • AChromium(VI) oxide
  • BChromium(IV) oxide
  • CChromium(III) oxide
  • DChromium(I) oxide
  • EChromium(II) oxide

Q17:

What is the name of the compound with the formula TiCl4?

  • AChlorine titanate(VI)
  • BTitanium(VI) chloride
  • CTitanium(IV) chloride
  • DChlorine titanate(IV)
  • ETitanium(VIII) chloride

Q18:

What is the name of the compound with the formula CoO?

  • ACobalt(IV) oxide
  • BCobalt(II) oxide
  • CCobalt(I) oxide
  • DCobalt(V) oxide
  • ECobalt(III) oxide

Q19:

What is the name of the compound with the formula MoS2?

  • AMolybdenum(IV) sulfide
  • BMolybdenum(VI) sulfide
  • CMolybdenum(II) sulfate
  • DMolybdenum(II) sulfide
  • EMolybdenum(IV) sulfate

Q20:

What is the formula of potassium phosphate?

  • A K P O 2 4
  • B K P O 3 3
  • C K P O 3
  • D K P O 3 4
  • E K P O 2 3

Q21:

What is the formula of copper(I) sulfite?

  • A C u S O 4
  • B C u ( S O ) 3 2
  • C C u S O 3
  • D C u S O 2 4
  • E C u S O 2 3

Q22:

What is the formula of copper(II) sulfate?

  • A C u S O 4
  • B C u ( S O ) 4 2
  • C C u S 2
  • D C u S O 3
  • E C u S

Q23:

What is the formula of calcium chloride?

  • A C a C l 4
  • B C a C l 3
  • C C a C l
  • D C a C l 2
  • E C a C l 2 3

Q24:

What is the formula of titanium(IV) dioxide?

  • A T i O 2
  • B T i O 2
  • C T i O
  • D T i O 3 2
  • E T i O 4

Q25:

What is the formula of ammonium nitrate?

  • A N H N O 3 3
  • B ( N H ) N O 4 2 2
  • C ( N H ) N O 4 2 3
  • D N H N O 4 3
  • E N H N O 4 2

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