l Learning
Target
I will learn how to use mass and volume measurements to find
the density of objects and substances.
l Criteria
for Success
I will be able to explain how density can be used to compare
different objects and substances.
l Soluble
capable of being dissolved
Examples:
sugar and water
salt and water
l Insoluble
incapable of being dissolved
Examples:
sand and water
metal and water
l Saturated
Solution
A solution in which the maximum amount of solute has been
dissolved
l Unsaturated
Solution
A solution which can dissolve more solute
l Sugar
and Water Observation Activity
l Density
l What
is density?
Density is a comparison of how much matter there is in a
certain amount of space.
l Which
one is more dense?
Demonstration: People in a square
How about this: Which square is more dense?
l Which
one is more dense?
l Mass:
A measure of how much matter is in an object
Volume the measure of the amount of space something takes up
Volume the measure of the amount of space something takes up
Density = mass
volume
l Let’s
try a density problem together
Frank has a paper clip. It has a mass of 9g and a volume of
3cm3. What is its density?
l Let’s
try a density problem together
Frank also has an eraser. It has a mass of 3g, and a volume
of 1mL. What is its density?
l Work
on these problems with your table.
Jack has a rock. The rock has a mass of 6g and a volume of
3mL. What is the density of the rock?
l Work
on these problems with your table.
Jill has a gel pen. The gel pen has a mass of 8g and a
volume of 2cm3. What is the density of the gel pen?
l Now,
try these on your own.
Victoria has a watch. It has a mass of 4g and a volume of
2cm3. What is the density of the watch?
l Now,
try these on your own.
Mia has a wallet. It has a mass of 15g and a volume of 5cm3.
What is the density of the wallet?
l How
do we measure mass and volume?
Explain how density can be used to compare different objects
and substances.
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