Density review - U2 test prep

650 grams of ethanol has a volume of 824 mL. What is the density of ethanol? Density = mass/volume

• 7.89 g/mL

• 0.789 g/mL

• 1.268 g/mL

• 12.67 g/mL

A "C" battery with a mass of 124 grams is placed in a graduated cylinder that contains 34 mL of water. The water volume shows 42 mL after the battery is added. What is the density of the battery? Density = mass/volume

• 3.65 g/mL

• 0.06 g/mL

• 1.63 g/mL

• 15.5 g/mL

A rectangular block of cobalt with a length 12 cm, a width of 3 cm and a height of 3 cm is placed on a triple-beam balance. The block of cobalt shows a mass of 961.2 grams. What is the density of the block? Density = mass/volume

• 8.9 g/cm³

• 53.4 g/cm³

• 11.4 g/cm³

• 0.1 g/cm³

A piece of mahogany with a volume of 1715.4 cm³ has a mass of 1350 g. What is the density of this wood? Density=mass/volume

• 365.4 g/cm³

• 1.27 g/cm³

• 0.79 g/cm³

• 10.4 g/cm³

Mass can be measured in grams or kilograms.

• True

• False

1 milliliter (mL) is equal to 1 cubic centimeter (cm³).

• True

• False

Mass is measured in a graduated cylinder.

• True

• False

If you need to find the volume of an irregularly shaped object, place it underwater and find the water displacement.

• True

• False

A mystery metal is determined to have a mass of 145 grams and a volume of 13.8 mL. Given the values below, determine the identity of the metal. Density = mass/volume.

• 7.17 g/mL, it is ZINC.

• 8.96 g/mL, it is COPPER.

• 10.49 g/mL, it is SILVER.

• 11.36 g/mL, it is LEAD

An old miner brings his find to town to sell. He tells the jeweler that he has found pure gold. The jeweler determines the mass of the metal to be 453.6 grams. The jeweler determines that the volume of the metal is 23.5 mL. Gold has a density of 19.3 g/mL. Did the miner really find gold?

• Yes

• No