Density Of Materials

Question 1

What does density describe?

Answer 1

How closely packed particles are in a solid liquid or gas

Question 2

How are particles packed in a solid?

Answer 2

Tightly packed
They only vibrate

Question 3

How are particles packed in a liquid?

Answer 3

Tightly packed but free to move past each other

Question 4

How are particles packed in a gas?

Answer 4

Particles are spread out and move randomly

Question 5

What is the difference between a liquid and its corresponding solid and why?e.g water and ice

Answer 5

Very little difference because particles are tightly packed both states

Question 6

What is density?

Answer 6

Amount of mass per unit volume

Question 7

Why does a piece of iron with the same dimensions of aluminium be heavier?

Answer 7

Because atoms are more closely packed

Question 8

What is 1g/cm3 in kg/3

Answer 8

1000

Question 9

How can you measure the volume of an irregular shape?

Answer 9

Using a displacement can and measuring cylinder
Put object into displacement can with measuring cylinder at the nozzle
Water that is in the measuring cylinder is the same volume as object

Question 10

How do you calculate the density of a regular cube?

Answer 10

1)Measure length with and height of a steel cube
2)Calculate volume by doing lxwxh
3)Place steel cube on top of balance and measure it’s mass
4]Then use p=m/v to calculate its density

Question 11

How do you calculate the density of a sphere?

Answer 11

1)Place a spehere on a balance and measure it’s mass
2)User veneer callipers to measure diameter of a spehere
3)Calculate volume of a spehere using the right equation
4)Use p=m/v to calculate density