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.
| Substance | |||
|---|---|---|---|
| Density (g/cm3) | 1.52 | 1.14 | 0.00143 |
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.
| Name | Formula | Density (g/cm3) |
|---|---|---|
| Niacin | 1.473 | |
| Pantothenic acid | 1.266 | |
| Pyridoxal phosphate | 1.638 | |
| Biotin | 1.267 | |
| 4-Aminobenzoic acid | 1.374 |
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.
| Name | Formula | Density (g/cm3) |
|---|---|---|
| Ibuprofen | 1.03 | |
| Acetaminophen | 1.26 | |
| Aspirin | 1.40 | |
| Naproxen | 1.20 | |
| Caffeine | 1.23 |
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