Science Word Problems

A rock occupies a volume of 20 cm3 and has a mass of 54 g. What is the density of this rock?

• 2.7 g/cm3

• 0.37 g/cm3

• 1080 g/cm3

• 27 g/cm3

A cube made of an unknown material has a height of 9cm. The mass of this cube is 3645 g. What is the density of this cube?

• 5 g/cm3

• 405 gcm3

• 135 g/cm3

A sample of seawater has a mass of 158 g and a volume of 156 mL. What is the density?

• 1.01 g/mL

• 0.99 g/mL

• 24,648 g/mL

A cylindrical box with a volume of 200 cm3 has 432 g of sodium chloride. What is the density?

• 2.16 g/cm3

• 21.6 g.cm3

• 216 g/cm3

• 0.46 g/cm3

A block of lead has dimensions of 4.5 cm by 5.2 cm by 6.0 cm. The block has a mass of 1587 g. What is the density?

• 11.3 g/cm3

• 0.09 g/cm3

• 101.1 g/cm3

What is the density of an object with a mass of 120g and a volume of 7mL?

• 17.14 g/mL

• 0.058 g/L

• 0.35 g/mL

A cube measures 5 cm on each side and has a mass of 300g. What is the density of the cube?

• 2.4 g/cm3

• 60 g/cm3

• 20 g/cm3

A 500 gram piece of metal has a volume of 2.75 cm3 . What is its density?

• 181.8 g/cm3

• 24 g/cm3

• 0.0055 g/cm3

A car travels 150 km in 3 hours. What is its average speed?

• 50 km/h

• 45 km/h

• 60 km/h

• 55 km/h

If a solution has a pH of 3, what is its nature?

• Neutral

• Acidic

• Basic

• Alkaline