Understanding Density and Volume Changes

What is the main topic discussed in the video?

• The concept of density

• The properties of gases

• The structure of atoms

• The behavior of liquids

If the volume of an iron cube is reduced by a quarter, what happens to its mass?

• The mass is halved

• The mass is doubled

• The mass is quartered

• The mass remains the same

How is density calculated?

• Density equals volume times mass

• Density equals volume divided by mass

• Density equals mass divided by volume

• Density equals mass times volume

What happens to the density of an iron cube when it is heated and its volume doubles?

• Density is doubled

• Density remains the same

• Density increases

• Density is halved

When the iron cube is cooled and its volume decreases, what happens to its density?

• Density is halved

• Density increases

• Density remains the same

• Density decreases