The density of a substance equals its mass divided by its volume. Talia listed the density of some common materials at 20 ◦C. If Talia has 10 grams of each material, which material has the greatest volume?

• Gasoline

• Mercury

• Milk

• Water

Tags

NGSS.MS-PS1-2

Imagine that the block shown below is made of pure gold. If Ana cuts this block into two equal pieces, which of these statements best describes the pieces?

• The mass of each piece is the same as that of the original block

• The weight of each piece is the same as that of the original block

• The density of each piece is the same as that of the original block

• The volume of each piece is the same as that of the original block

Julio measured the mass of a small rock as 11.0 grams. Then he measured the volume of the rock as shown in the illustration below. What is the density of Julio’s rock?

• 1.1 g/cm3

• 2.2 g/cm3

• 5 g/cm3

• 11 g/cm3

Amin had two metal cubes of identical sizes. He placed the first cube on one side of a pan balance and the second cube on the other side of the balance. The illustration shows what happened. What conclusion can Amin draw about the two cubes?

• The weights of the cubes are the same

• The volumes of the cubes are different

• The masses of the two cubes are the same

• The densities of the two cubes are different

Amin had two metal cubes of identical sizes. He placed the first cube on one side of a pan balance and the second cube on the other side of the balance. The illustration shows what happened. What is the volume of each cube?

• 125 cm3

• 25 cm3

• 15 cm3

• 5 cm3

6. It is impossible to directly measure some properties of an object. Which of these properties cannot be measured directly?

• Density

• Mass

• Volume

• Weight

When a helium balloon rises in the air, it expands. If the volume of the balloon doubles, what happens to the density of the helium inside it?

• The density triples

• The density doubles

• The density stays the same

• The density decreases by half

Paul placed an ice cube into a beaker on a hot plate. The ice cube changed from a solid to a liquid and then to a gas. During this process, which property of the ice cube remained unchanged?

• Density

• Mass

• Temperature

• Volume

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which statement best describes volume?

• The measure of the amount of matter in an object

• The measure of the amount of matter in a given space

• The measure of the amount of space that an object occupies

• The measure of the amount of pull exerted on an object by a gravitational field

Matt has a blue balloon and a red balloon that are the same volume but filled with different gases. The red balloon floats in air, but the blue balloon does not float in air. How does the density of the gas in the balloons compare to the density of the surrounding air?

• The gases in both balloons are less dense than air

• The gas in the red balloon is less dense that the air and the gas in the blue balloon is more dense than air

• The gas in the blue balloon is less dense than the air and the gas in the red balloon is more dense than air

• The gases in both balloons have the same density as the air