Name
Date
Finding the Density of Substances
Objective
To determine the density of various objects and liquids.
Materials
Balance
Objects
Graduated cylinder
Liquids
Procedure
Mass
1. Find the mass of each object using the triple beam balance.
2. Find the mass of each liquid by first finding the mass of the empty grad. cylinder.
Record this in the chart below. Then pour 25 ml of the liquid into the small grad.
cylinder and find its mass. Record. Lastly, subtract the mass of the liquid and
grad. Cylinder from the mass of the empty grad. Cylinder. Record.
Volume
3. Find the volume of a regular object by using a ruler to find its length, width, and
height. Record
4. Find the volume of a liquid by pouring 25 ml into the graduated cylinder. Record.
5. Find the volume of an irregular object by pouring water into the grad. Cylinder.
Record.
6. Now put the object into the grad. Cylinder (submerge if it tries to float). Record
the new volume.
7. Subtract the volume of the water with the object in it from the volume of the
water without the object in it. Record.
Density
8. Use the density equation to determine the density of each substance. Record.
Make sure you show at least one of your calculations below.
Calculations of Density
Results
Object
or
Liquid
Mass of
Empty
Grad.
Cylinder,
g
Mass of
Grad.
Cylinder
with
liquid, g
Pen
Block
Key
Water
Oil
NA
NA
NA
NA
NA
NA
Mass of
Object
or
Liquid,
g
Volume
of Grad.
Cylinder
with
Water,
ml
Volume Volume,
of Grad. cm3 or
Cylinder ml
with
Water +
Object,
ml
NA
NA
NA
NA
NA
NA
Density,
g/ml or
g/cm3
Conclusion
Questions
1. Define mass and give its units.
2. Define volume and give its units.
3. What is the volume of a ball that is put into a large graduated cylinder and it
raises the water from 120 ml to 195 ml? Show your all work and calculations
4. What is the difference between mass and weight?
5. Would your mass change if you were standing on the Moon? Explain fully.
6.
Which has a bigger mass, a large beach ball or a bowling ball?
7. Which has a bigger volume, a large beach ball or a bowling ball