Density Detective: Comparing Real-Life Materials

A block of wood has a mass of 300 grams and a volume of 150 cubic centimeters. What is the density of the wood?

• 1 g/cm³

• 4 g/cm³

• 2 g/cm³

• 3 g/cm³

A metal cube has a mass of 500 grams and a volume of 100 cubic centimeters. How does the density of the metal compare to that of the wood from the first problem?

• The density of the metal cannot be compared to that of the wood.

• The density of the metal is less than that of the wood.

• The density of the metal is greater than that of the wood.

• The density of the metal is equal to that of the wood.

A bottle filled with water weighs 1,000 grams and has a volume of 1,000 milliliters. What is the density of the water?

• 1.5 grams/milliliter

• 0.5 grams/milliliter

• 2 grams/milliliter

• 1 gram/milliliter

If you have a rock that weighs 600 grams and occupies a volume of 200 cubic centimeters, what is the density of the rock?

• 4 g/cm³

• 2 g/cm³

• 3 g/cm³

• 1.5 g/cm³

Compare the density of the rock from the previous problem to the density of water. Which one is denser?

• The rock is less dense than water if its density is less than 1 g/cm³.

• The rock and water have the same density if both are exactly 1 g/cm³.

• Water is denser than the rock if its density is greater than 1 g/cm³.

• The rock is denser than water if its density is greater than 1 g/cm³.

A piece of aluminum has a mass of 270 grams and a volume of 100 cubic centimeters. Calculate the density of aluminum and compare it to the density of the wood.

• The density of aluminum is 2.7 g/cm³, which is much higher than the density of wood.

• The density of aluminum is 3.5 g/cm³, which is slightly higher than the density of wood.

• The density of aluminum is 2.0 g/cm³, which is equal to the density of wood.

• The density of aluminum is 1.5 g/cm³, which is lower than the density of wood.

If a substance has a density of 2.5 grams per cubic centimeter, what would be the mass of a 400 cubic centimeter sample of this substance?

• 1000 grams

• 1200 grams

• 500 grams

• 800 grams

A balloon filled with helium has a mass of 50 grams and a volume of 1,000 cubic centimeters. What is the density of the helium? How does it compare to the density of air, which is approximately 1.2 grams per cubic centimeter?

• 0.02 grams per cubic centimeter

• 1.0 grams per cubic centimeter

• 0.05 grams per cubic centimeter

• 0.1 grams per cubic centimeter

You have two liquids: Liquid A has a density of 0.8 grams per milliliter and Liquid B has a density of 1.2 grams per milliliter. If you mix them, which liquid will float on top?

• Liquid A

• Liquid B

• Neither liquid will float

• Both liquids will mix evenly

A fish tank is filled with water and has a total mass of 5,000 grams. If the tank has a volume of 4,000 milliliters, what is the density of the water in the tank?

• 1.25 g/ml

• 3.0 g/ml

• 2.0 g/ml

• 0.5 g/ml