Volume, Mass and Density Part I: Volume
Volume, Mass and Density Part I: Volume
Name
Click on the link DENSITY to go to the proper page. Then follow directions. Make sure that you have written all answers on this answer sheet.
What will happen when the metal block is slowly lowered into the water?
Is the volume of water displaced equal to the volume of the object? yes no Finding the volume of the cube (in cubic cm.) that was lowered into the graduated cylinder. First we must measure the length of the sides in centimeters.
What is the length of the sides of the cube?
cm
To find the volume of a rectangular solid, use the following formula: Volume = length x width x thickness. Since the length is measured in centimeters and the width in centimeters and thickness in centimeters your answer for volume shoulc be in cm.3
The volume of the cube in cubic centimeters is:
cm.3
The volume of the cube in cubic inches is:
in.3
Since the 1 cubic centimeters (cm.3) is equal in volume to 1 milliliter (ml), what is the volume of the cube in
milliters?
ml
What was the amount of water displaced by the object?
ml
Take a look at your values for the volume of the cube and the volume of displaced water. Although the
values may be close, are they exactly the same?
yes no
What are some reasons to account for the small differences in using the two methods to calculate volume?
Volume, Mass and Density Part II: MASS
Find the total mass of the object by adding the mass value of each beam.
The mass of the block is:
g
Volume, Mass and Density Part III: DENSITY
Take a look at the two boxes.
Each box has the same volume.
If each ball has the same mass, which box would weigh more?
Why?
This property of matter that you have observed is called density.
Why is density useful when identifing unknown materials?
We can calculate density using the formula:
Density= Mass/Volume
Since mass is usually expressed in grams and volume in cm. 3, density is expressed in g/cm3,.
Find the density of the block using the above formula.
grams/cubic cm.
If another block (block II) has the same volume and a mass of 25.4 grams what would its density be?
g/cm3.
What is each block made of? Block I Block 2
More stuff........click on Challenge Questions - do not do questions 1 - 3.
Do you know the difference between mass and weight? yes no
4) What mass is needed on the right side to balance the lever on earth?
grams
What mass is needed to balance the lever
on the Moon?
g
Assume the two blocks are equal distance from the fulcrum and the balancing beam has minimal mass.
1
Gravitational attraction for an object on the surface of the moon is /6 th of the gravitational attraction on earth.
Explain your answers.
5) A mass is attached to the spring scale on earth. The scale reads 100 g. as shown. The spring scale is now brought to the moon.
What mass will be needed for the scale to read 100 g.?
g
Explain your answers.
How is a spring scale different than a mass balance? How is it similar?
6) Find the density of a cube with a side of 4 cm. and a mass of 1235 grams. What is the cube made of?
g/cm. 3
7) What is the mass of the cylinder on the left assuming it is made of ice?
grams
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