Density Review

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

• 8 g/cm³
• 2 g/cm³
• 1/2 g/cm³
• 24 g/cm³

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Why do some substances float on water?

• they are warmer than water
• they are cooler than water
• they are more dense than water
• they are less dense than water

Tags

NGSS.MS-PS2-4

A crayon has a mass of 10g and volume of 5 mL. What is the density?

• 30 g/mL
• 15 g/mL
• 1 g/mL
• 2 g/mL

What is this tool to get mass?

• triple beam balance
• ruler
• thermometer
• graduate cylinder

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle

What is the volume of Object X?

• 10.0 cm³
• 15.0 cm³
• 20.0 cm³
• 25.0 cm³

Mercury is a metal that is liquid at room temperature and has a density of 13.5 g/cm3.  Which of these metals would sink below the mercury if dropped into a container of mercury?

• gold (density=19.3 g/cm3)
• lead (density=11.4 g/cm3)
• iron (density=7.9g/cm3)
• aluminum (density=2.7g/cm3)

What is the density of a substance that has a mass of 30g and a volume of 6 liters?

• 24 g/l
• 5 g/l
• 36 g/l
• 180 g/l