Density (conceptual) | Middle school chemistry | Khan Academy

What does density measure?

• How much space an object takes up.

• How heavy an object is.

• How much mass is packed into a given volume.

• The total amount of matter in an object.

What type of property is density, meaning it does not depend on the amount of the substance?

• Extrinsic property

• Variable property

• Intrinsic property

• Dependent property

Which of these materials is the densest?

• Water

• Aluminum

• Gold

• Iron

If an object has a density of 0.5 g/cm³, what will happen when it is placed in water (density 1.0 g/cm³)?

• It will sink to the bottom.

• It will float on the surface.

• It will dissolve in the water.

• It will stay suspended in the middle.