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How would you measure the volume of an irregularly shaped object to calculate its density?

Submerge it in water and measure the displaced volume.

Use a ruler to measure its dimensions.

Weigh the object in air and water.

Use a scale to measure the object's height.

How would you increase the density of an object?

Increase its mass and keep volume constant.

Decrease its volume and keep mass constant.

Increase its volume.

Decrease its mass.

Which of the following is true about the density of gases?

The density of gases is higher than liquids at all temperatures.

Gases have a very high density compared to solids.

The density of gases is independent of pressure and temperature.

Gases have a low density compared to liquids and solids.

The density of a substance is given by 3 g/cm³. If its mass is 150 g, what is its volume?

50 cm³.

150 cm³.

45 cm³.

60 cm³.

An object has a mass of 150 g and a volume of 75 cm³. What is its density?

2 g/cm³.

20 g/cm³.

1.5 g/cm³.

0.5 g/cm³.