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If the density of oil is 0.9 g/cm³, will it float or sink in water?

Sink.

Neither.

Both float and sink.

Float.

Which of the following would affect the density of a gas?

Temperature.

All of the above.

Pressure.

Volume.

Eggs float in salt water but sink in fresh water because:

salt water contains impurities, while fresh water does not.

all solids float in saltwater.

salt water is denser than fresh water.

fresh water is denser than salt water.

What is the definition of density?

Mass per unit volume.

Volume per unit mass.

Weight per unit volume.

Force per unit volume.

Which of the following is the correct method for measuring the density of an irregularly shaped object?

By submerging it in a liquid and measuring the displacement.

By measuring its mass and dividing by the volume of a sphere.

By calculating its mass and comparing to a reference.

By measuring its mass and dividing by the volume of a cube.