Three Density Tests

Question 1

Experiment to find the density of a liquid

Answer 1

Apparatus: Measuring cylinder
Electronic balance

Method:
Measure mass of empty cylinder using electronic balance
Add liquid to cylinder and record new mass
Find mass of liquid by subtracting the mass of empty cylinder
Measure volume using cylinder
Calculate density

Question 2

Experiment to find the density of an irregular object

Answer 2

Apparatus: Electronic balance
Measuring cylinder

Method:
Measure mass of object using electronic balance
Add water to cylinder
Measure volume of water in cylinder
Submerge object in liquid (avoid splashes)
Measure new volume of water+object
Calculate volume of object
Calculate density
Repeat to increase reliability

Question 3

What is the experiment to investigate the relationship between mass and volume for density?

Answer 3

Apparatus:
At least 3 blocks of same material, different sizes
Ruler
Electronic balance

Method:
Measure the mass of block using electronic balance
Measure length, breadth and height using ruler
Record results
Draw graph of mass (y) against volume (x)

Diagram:
Rectangle