Density Quiz

What is the density of water?

1 g/mL

Find the density of an object that has a mass of 34 grams and a volume of 14 mL.

34 g/14 mL = 2.43 g/mL

What is the density of a substance that has a mass of 55.4 grams and a volume of 10 cm cubed?

5.54 g/cm cubed

The mass of an object is 6 kg on earth. What would the mass be on the moon?

6 kg Mass doesn't change.

Substance A (Mass = 12 g, Volume = 4 cm cubed) Substance B (Mass = 16 g, Volume = 4 cm cubed) Substance C (Mass = 20 g, Volume = 4 cm cubed) Substance D (Mass = 24 g, Volume = 4 cm cubed) What is the density of each substance?

A = 3 g/cm cubed B = 4 g/cm cubed C = 5 g/cm cubed D = 6 g/cm cubed

A submarine is able to move throughout the water by...

Changing or altering its density.

Density measurements and weight measurements are the same thing. True or False

False. Weight depends on the pull of gravity. Density depends on Mass and Volume.

What is the correct explanation for why ice floats?

Ice is less dense than water because it takes up less space even though it is the same mass.

How are density and buoyancy related?

If an object is less dense than a liquid, it will float or be "buoyant."

An object will float in liquid if it is...

Less dense than the liquid surrounding it.

Density is defined as...

Mass/Volume

The formula for finding density is...

Mass/Volume or Mass divided by volume. Remember I Heart Density!

Which of the following will cause the mass of a metal block to increase?

Nothing. Mass doesn't change unless you add matter to it.

When two materials have different densities, like oil and water, they will...

Separate according to their densities.

Volume of a solid is shown in units of... Volume of a liquid is shown in units of... These two units are EQUAL (True/False)

Solid = cm cubed Liquid = mL True

You have 2 plastic vials. One has 40 mL of water and the other has 40 mL of alcohol. What does this measurement tell you?

The 2 volumes are the same.

Mass is...

The amount of matter in an object.

Define Volume

The amount of space an object takes up.

You are given a mystery object in science class. Your teacher asks you to determine if the object is more or less dense than water. When you put it in water, it sinks. What does this mean?

The object has a greater density than water.

If a mineral has a density of 3 g/cm cubed, and a mass of 48 g, then what is its volume?

V = M/D V = 48/3 = 16 cm cubed

A cube has a side of 5 cm. It has a mass of 250 grams. What is the density? Hint: Volume of a cube = L x W x H

Volume = 5 x 5 x 5 = 125 cm cubed Density = 250/125 = 2 cm cubed

If we use the units (g) for grams and (cm cubed) for volume, what are the units for density?

g/cm cubed

A graduated cylinder is used to measure...

liquid volume

How is mass different than weight?

mass remains constant; weight depends on the pull of gravity.

What tool do we use to measure mass?

triple beam balance