Density Practice

Which of the following is the correct calculation for determining the density of an object with a mass of 54 g and a volume of 6 mL?

• 6 ÷ 54

• 6 x 54

• 
  54 ÷ 6

• 6 + 54

A rock’s density is 5 g/cm³. Determine the mass of the rock if it has a volume of 20 cm³.

• 
  4 g

• 
  20 g

• 
  50 g

• 
  100 g

A diamond’s density is 3.2 g/cm³. Determine the volume of a diamond that has a mass of 1 g.

• 0.031 cm³

• 
  0.31 cm³

• 3.2 cm³

• 32 cm³

A rock with a mass of 70 grams is dropped into a graduated cylinder with 30 mL of water in it. The water level rose as shown. Calculate the density of the rock in g/mL. Record the answer in the bubble chart.

• 14

• 350

• 5

• 150

The provided table shows the properties of four different sample materials. One of these materials is cork, a type of wood that floats on water (density of water = 1.00 g/cm³). What is the density of cork in g/cm³?

• 1.19- Sample 1

• 1.73- Sample 2

• 0.23- Sample 3

• 1.28- Sample 4

The table provides the densities of several substances. A student has a sample of an element that has a volume of 6.7 cm³ and a mass of 75.7 g. Based on the density, which element on the table could it be?

• Germanium

• Iron

• Lead

• Mercury

A sapphire's density is 3.98 g/cm³. Which of the following gemstones, based on its density, might be a sapphire?

• Gemstone #1: mass =1 g, volume =1 cm³

• Gemstone #2: mass =7.96 g, volume =2 cm³

• Gemstone #3: mass =50 g, volume =4 cm³

• Gemstone #4: mass =25.6 g, volume =8 cm³

The table provided identifies a substance based on its density. A sample of an unknown substance has a mass of 28.8 grams and a volume of 4 cm³. Based on its density, it could be which of the following substances?

• Gold

• Iron

• Lead

• Tin