Density Demystified

What is the definition of density?

• The amount of mass per unit of energy

• The amount of mass per unit of volume

• The amount of space an object occupies

• The gravitational force acting on an object

How do you calculate the density of a substance?

• Mass divided by volume

• Volume divided by mass

• Mass multiplied by volume

• Mass plus volume

If a block of wood has a mass of 600 grams and a volume of 1200 cubic centimeters, what is its density?

• 0.5 grams per cubic centimeter

• 2 grams per cubic centimeter

• 1.2 grams per cubic centimeter

• 0.2 grams per cubic centimeter

What happens to the density of water as it is heated from 4°C to 100°C? (Liquid to Gas)

• It increases

• It decreases

• It remains constant

• It first decreases, then increases

Which of the following units could be used to express density?

• g/mL

• m/s

• cubic meters

• mL

If two objects have the same volume but different masses, what can we say about their densities?

• They have the same density

• The object with the greater mass has a higher density

• The object with the lesser mass has a higher density

• Cannot be determined without actual measurements

Why does ice float on water?

• Ice has a higher density than water

• Ice has a lower density than water

• Ice and water have the same density

• The surface tension of water keeps ice afloat

What is the density of a material that has a mass of 250 grams and a volume of 50 cubic centimeters?

• 2 grams per cubic centimeter

• 5 grams per cubic centimeter

• 12.5 grams per cubic centimeter

• 500 grams per cubic centimeter

If the temperature of a solid is increased, what happens to its density?

• It increases

• It decreases

• It remains the same

• It first increases, then decreases

Which of the following statements is true about the relationship between density and temperature?

• Density is directly proportional to temperature

• Density is inversely proportional to temperature

• Density is not related to temperature

• Density is only affected by temperature in liquids