Lesson Worksheet: Density Measurements Chemistry

In this worksheet, we will practice describing methods for measuring solid and liquid densities, identifying errors, and troubleshooting mistakes.

Q1:

An irregular piece of shiny yellow metal is weighed and then submerged in a graduated cylinder partially filled with water as shown in the figure.

The dry mass of the metal piece is 51.842 g.

What is the density of the metal piece?

  • A14 g/cm3
  • B19 g/mL
  • C18 g/cm3
  • D21 g/cm3
  • E7.4 g/cm3

What is metal piece most likely made of?

  • ATungsten (density = 19.3 g/cm3)
  • BAluminium (density = 2.70 g/cm3)
  • CTitanium (density = 4.51 g/cm3)
  • DLead (density = 11.3 g/cm3)
  • EGold (density = 19.3 g/cm3)

Q2:

The table shown lists the density of oxygen in solid, liquid, and gaseous forms.

SubstanceO()2sO()2lO()2g
Density (g/cm3)1.521.140.00143

To 1 decimal place, how many times more molecules are present in solid oxygen than in an equal volume of oxygen gas?

Q3:

The molecular formulas and densities of five B vitamins are shown in the table.

NameFormulaDensity (g/cm3)
NiacinCHNO6521.473
Pantothenic acidCHNO91751.266
Pyridoxal phosphateCHNOP81061.638
BiotinCHNOS1016231.267
4-Aminobenzoic acidCHNO7721.374

Which of these vitamins contains the most molecules per unit volume?

  • ABiotin
  • B4-Aminobenzoic acid
  • CPyridoxal phosphate
  • DPantothenic acid
  • ENiacin

Which of these vitamins contains the fewest atoms per unit volume?

  • APyridoxal phosphate
  • BNiacin
  • C4-Aminobenzoic acid
  • DPantothenic acid
  • EBiotin

Which of these vitamins contains the most hydrogen atoms per unit volume?

  • ABiotin
  • BPantothenic acid
  • CPyridoxal phosphate
  • D4-Aminobenzoic acid
  • ENiacin

Which of these vitamins contains the most nonhydrogen atoms per unit volume?

  • ABiotin
  • BNiacin
  • CPyridoxal phosphate
  • D4-Aminobenzoic acid
  • EPantothenic acid

Q4:

The molecular formulas and densities of five compounds found in analgesic drugs are shown in the table.

NameFormulaDensity (g/cm3)
IbuprofenCHO131821.03
AcetaminophenCHNO8921.26
AspirinCHO9841.40
NaproxenCHO141431.20
CaffeineCHNO810421.23

Which of these compounds contains the fewest molecules per unit volume?

  • AIbuprofen
  • BAspirin
  • CAcetaminophen
  • DNaproxen
  • ECaffeine

Which of these compounds contains the most atoms per unit volume?

  • AAspirin
  • BNaproxen
  • CCaffeine
  • DIbuprofen
  • EAcetaminophen

Which of these compounds contains the fewest hydrogen atoms per unit volume?

  • AAcetaminophen
  • BAspirin
  • CIbuprofen
  • DNaproxen
  • ECaffeine

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