Density, Mass, and Volume Quiz

What is the density of a substance with a mass of 150 g and a volume of 75.0 cm³?

• 1.50 g/cm³

• 2.00 g/cm³

• 2.50 g/cm³

• 3.00 g/cm³

Answer explanation

To find the mass, use the formula: mass = density × volume. Here, mass = 0.94 g/cm³ × 72.5 cm³ = 68.15 g. Thus, the correct answer is 68.15 g.

What is the formula for calculating density?

• Density = \frac{Mass}{Volume}

• Density = Mass \times Volume

• Density = \frac{Volume}{Mass}

• Density = Mass + Volume

Answer explanation

The correct formula for calculating density is Density = Mass / Volume. This means density is determined by dividing the mass of an object by its volume, making the first choice the accurate one.

Which of the following units is commonly used for density?

• kg/m^2

• kg/m^3

• kg/m

• kg

Answer explanation

Density is defined as mass per unit volume. The correct unit for density is kg/m³, which represents kilograms per cubic meter. The other options do not represent density correctly.

Answer explanation

To find the mass, use the formula: mass = density × volume. Here, mass = 8 g/cm³ × 2 cm³ = 16 g. Therefore, the correct answer is 16 g.

If two objects have the same volume but different masses, which one will have a higher density?

• The one with the lower mass.

• The one with the higher mass.

• Both will have the same density.

• Density cannot be determined from mass and volume.

Answer explanation

Density is defined as mass divided by volume. If two objects have the same volume, the one with the higher mass will have a higher density, as it has more mass in the same space.

Answer explanation

To find the mass, use the formula: mass = density × volume. Here, mass = 1.2 g/mL × 250 mL = 300 g. Therefore, the correct answer is 300 g.

What is the density of an object if it has a mass of 6g and a volume of 3 cm3?

Answer explanation

Density is calculated as mass divided by volume. Here, density = 6g / 3cm³ = 2g/cm³. The correct answer is 2.

If a substance has a mass of 10g and a density of 5g/cm3, what is its volume? Write the answer in terms of cm3

Answer explanation

To find the volume, use the formula: Volume = Mass / Density. Here, Volume = 10g / 5g/cm3 = 2cm3. Therefore, the correct answer is 2cm3.

Use the chart to find the answer. You have an unknown object with a mass of 62.4g. It i an irregular shape so to find the volume you place it in a graduated cylinder with 20ml of water to find its volume. The graduated cylinder now has 28 ml of water. According to the chart, which of the substances do you think you most likely have?

Answer explanation

The volume of the object is 28ml - 20ml = 8ml. The density is mass/volume = 62.4g/8ml = 7.8g/ml. According to the chart, this density matches that of iron, making it the most likely substance.

Use the chart to find the answer. You have an unknown object with a mass of 50g. It i an irregular shape so to find the volume you place it in a graduated cylinder with 20ml of water to find its volume. The graduated cylinder now has 25ml of water. According to the chart, which of the substances do you think you most likely have?

Answer explanation

The mass of the object is 50g and its volume is 10ml (30ml - 20ml). The density is 5g/ml (50g/10ml). According to the chart, this density matches that of silver, indicating the object is most likely silver.