Density

Question 1

What does all matter possess?

Answer 1

Mass

Question 2

What is mass measured in?

Answer 2

Grams or kilograms

Question 3

With what do you measure mass?

Answer 3

Triple beam balance, mass meter or electronic scale

Question 4

With what do you measure the volume of liquids?

Answer 4

Measuring cylinder, burette or pipette

Question 5

The general units for volume of materials are?

Answer 5

Cubic meter (m3), cubic centimeter (cm3) or cubic millimeter (mm3)

Question 6

What material has the greatest density?

Answer 6

The material with the largest mass per cm3

Question 7

What does the density of material depend on?

Answer 7

1. The nature of the particles and the strength of the forces between the particles.
2. The size and type of particles it is made of.
3. The size of the spaces between the particles.

Question 8

How do you calculate the density of a material?

Answer 8

Mass divided by the volume of the specific material

Density = mass/volume

Question 9

What unit is used for density?

Answer 9

g.cm3

Question 10

What role does density play in whether a material floats or sinks?

Answer 10

A material with a lower density will float on a liquid with a higher density.

Question 11

Examples of materials that floats are:

Answer 11

1. Ice (lower density) floats on soda (higher density).
2. Oil (lower density) floats on water (higher density).
3. Cork (lower density) floats on water (higher density)

Question 12

What is the density of water?

Answer 12

1g.cm3

Question 13

Arrange the following materials in order of increasing density:
Lead / cork / water / zinc / ice

Answer 13

1. Cork
2. Ice
3. Water
4. Zinc
5. Lead