Topic 5 - Mix and Flow of Matter

A

100

This  is mass per unit volume of a substance.

density

200

“Empty space” does not mean “air.”  What does empty space mean?

Empty space means a separation between two objects with nothing between those objects, not even air particles.

300

The density of the water vapour is _____ than the density of liquid water.

less

400

Liquid mercury is so dense that it can support a solid iron bolt. True of False?

True

500

This is the amount of matter in a substance

Mass

B

100

This is a measurement of the amount of space occupied by the substance.

Volume

200

This  is the force of gravity exerted on an object. As you may recall from earlier studies,

Weight

300

This is a push or a pull, or anything that causes a change in the motion of an object.

a force

400

This is the natural force that causes an object to move toward the centre of Earth.

Gravity

500

All forces, including weight, are measured in _______

newtons (N).

C

100

On Earth, gravity pulls on an object with a downward force of ______________

9.8 N for every kilogram of its mass.

200

The ___________ is the relationship between mass and volume expressed as a quantity of the mass divided by its volume.

mass-to-volume ratio

300

This is a way of expressing a mass-to-volume ratio.

density 

400

The ratio “mass to volume” (or “mass : volume”) means the ______________

“mass divided by the volume.”

500

The formula for density is:

D = M/V