Topic 5

Question 1

What is density

Answer 1

Density is the mass per unit volume of a substance.
i.e The crowdedness of the particles

The size ,mass and arrangement of the atoms affects the density of a substance.
As you increase Temp the particles gain energy, taking up more space and decreasing the substances density.

Question 2

How to measure Density

Answer 2

Density is measured by mass per unit volume

Density is the Mass divided by the Volume or D=m/V

Question 3

Mass and Volume

Answer 3

Mass(g)- amount of matter in a substance; measured with a balance
Volume(cm3)- the amount of space occupied by a substance ; measured in litres or cubic units

Question 4

Weight and Gravity

Answer 4

Weight- the force of Gravity exerted on Mass(N)
Gravity- the attractive forces between masses
Force a push or pull, or anything that causes a change in the motion of an object

Question 5

How to calculate weight

Answer 5

Mass x 100

Question 6

How to measure volume of irregular shape

Answer 6

Displacement. You have to submerge it fully in water and measure the volume of water that is spilt out of the container. That volume is exactly the same as the object.