Unit 7 Test Review

An object with which of the following densities will float on water?

• 0.7 g/cm3
• 1.2 g/cm3
• 3.5 g/cm3
• 11.4 g/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)

______________________ can be used to identify a substance and they are not affected by the amount of the substance.

• chemical properties
• characteristic properties
• physical properties
• elemental properties

Which liquid has the least density?

• Water
• Glycerine
• Corn Oil
• Corn Syurp

The amount of space an object takes up

• mass
• volume
• density
• gram

What is the volume of this block

• 168 cm³
• 17 cm³
• 10 cm³
• 145 cm³

What is the formula for density?

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

What is the density of an object with a mass of 30 grams and a volume of 6 cm³

• 36 g/cm³
• 5 g/cm³
• 30 g/cm³
• 5 g/cm²

An irregularly shaped stone is lowered into a graduated cylinder holding a volume of water equal to 2 mL. The height of the water rises to 7 mL. If the mass of the stone is 25 g, what is its density?

• 5 mL
• 3.57 g/cm³
• 0.20 g/cm³
• 5 g/cm³

The mass of an unknown object is 15 g and the volume of the object is 30 ml. What is the object?

• Air
• Ice
• Pine
• Brick