Hosted
by
Mrs. Sowa
Density
Equation
Graphs
Matter
Models
Measuring
m and V
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5 g/cm3
What is the density of a substance
that has a mass of
125 g and a volume of 25 cm3?
Row 1, Col 1
mass
When you graph data on the mass and
volume of a substance,
which variable goes on the y-axis?
1,2
Less,
because water is less dense
than lead.
A cylinder of water that is equal in volume
to a cylinder of lead
will have more, the same, or less
mass than the lead?
1,3
Measure the length, width and height
and multiply them together.
How would you find the volume of a
large block of wood?
1,4
30 g
What is the mass of 30 mL of water?
2,1
Since the mass divided by the volume for all amounts
of the substance is the same, the points fall in a line.
How does a graph of mass vs. volume
tell you that density is
a characteristic property?
2,2
B,
because it has more matter
in the same amount of space.
Which is more dense and why?
A
or
B
2,3
Water displacement
What method would you
use to determine the
volume of a rock?
2,4
2.0 g/cm3 x 5 cm3 = 10 g
An object with a density of 2.0 g/cm3
displaces 5 mL of water. What is its mass?
3,1
The line for water would be above the line for
vegetable oil b/c water is more dense.
On a graph of mass vs. volume,
where would the line for water be
compared with the
line for vegetable oil?
3,2
They have the same density. Although B has more
volume, it also has more matter. Also, the particles are
spaced the same for both A and B.
Which is more dense and why?
FIGURE
Figure
1 1
A
B
B
A
3,3
cm3
What units are used for the
volume of an irregular solid?
3,4
The mass of the copper is 10 times greater than the
mass of the wax.
A piece of wax (0.9 g/cm3) and
a piece of copper (9.0 g/cm3)
have the same volume.
How do their masses compare?
Be specific!
4,1
Sink
Consider a graph of m vs. V.
Substances with lines that are
steeper than the line for water
would _____
when placed in water.
4,2
The cube of gold. (Size doesn’t matter)
A cube of gold (19.3 g/cm3) and
a cube of nylon (1.2 g/cm3) both have sides
that are 2 cm in length.
Which is more dense?
4,3
g/cm3
What units are used for the
density
of most substances that we
measure in class?
4,4
24 g  1.2 g/cm3 = 20 cm3
A large nylon bolt has a density
of 1.2 g/cm3 and mass of 24 g.
What is it’s volume?
5,1
The data fell into two distinct lines that had
different slopes (different densities)
When graphing mass and volume data
for the Density and Sample Size Lab,
how could you determine that the
cylinders were made from
different substances?
5,2
B, because it has more matter particles.
Which substance has
a greater mass?
FIGURE
Figure
1 1
A
B
B
A
5,3
The substance will float in substances with a higher
density and sink in substances with a lower density.
How can a density column
help you determine the
density of a substance?
5,4