Vocabulary
Amount of space that matter occupies
volume
this tool can be used to find the volume of a regular object (square/rectangle)
ruler
Mass and Volume
which is the correct equation for measuring density?
D = M/V
D = M/W
D = V/M
D = V/W
D = M/V
weight is a flawed measure of mass because it
a. is not used in other countries
b. is affected by the force of gravity
c. tends to fluctuate (change)
d. can be influenced by temperature and pressure
b. is affected by the force of gravity
Measure of the mass of a material in a given volume
density
This tool can be used to find the volume of a liquid
graduated cylinder
Using a graduated cylinder, pour in the liquid and read the measurement on the cylinder. That is the volume.
What is the density of an object whose mass is 180 grams and whose volume is 45 cm3?
a. 4 cm3/g
b. .25 g/cm3
c. 4 g/cm3
d. .25 cm3/g
4 g/cm3
Which objects would float in water
1. A - Density is 12 g/cm3
2. B - Density is 9g/cm3
3. C - Density is 3 g/cm3
4. D - Density is .45 g/cm3
4. D - Density is less than 1 (.45 g/cm3)
amount of matter in an object
mass
triple-beam balance
How would you find the mass of a liquid? State the tool that you would use and the method.
Use a graduated cylinder and find the mass of the cylinder first. Next, pour in your liquid and find the mass of the liquid and the container. Next, subtract the mass of the container to find the mass of just the liquid.
1. Cube 1 - Mass (8) Volume (1)
2. Cube 2 - Mass (1) Volume (8)
3. Cube 3 - Mass (1) Volume (1)
4. Cube 4 - Mass (8) Volume (8)
Cube 1 = 8 g/cm3
Which one liquid would sink to the very bottom of a container if all liquids were poured in. The D of each liquid is stated.
a. Dish soap - 1.03 g/mL
b. Honey - 1.36 g/mL
c. Corn Syrup - 1.33 g/mL
D. Corn oil - .91 g/mL
B. Honey has the highest density at 1.36 g/mL
the force gravity exerts on an object
weight
g/ml or g/cm3
How would you find the density of a small wooden block? Describe the procedure and the tools used.
Find the volume by using a ruler and using l x w x h. Find the mass by using a triple-beam balance.
Calculate density by taking mass divided by volume. The final unit is in g/cm3.
Find the density of each liquid if they each have a volume of 3 mL.
Rubbing alcohol - Mass is 2.40 g
Milk - Mass is 3.12 g
Density for rubbing alcohol - .8 g/mL
Density for milk - 1.04 g/mL
Which one liquid would float to the very top of a container if all liquids were poured in. The D of each liquid is stated.
a. Dish soap - 1.03 g/mL
b. Honey - 1.36 g/mL
c. Corn Syrup - 1.33 g/mL
D. Corn oil - .91 g/mL
D. Corn oil with the lowest density of .91 g/mL
The astronauts took measurements of moon rocks in three categories not affected by gravity. Which measurements did they not use?
a. mass
b. density
c. weight
d. volume
a. weight (weight is the force of gravity on an object)
Mass is measured in this (in the lab).
grams / g
How would you find the density of a liquid? State the tools used and the procedures.
Find the volume of a liquid by pouring it in a graduated cylinder.
Find the mass by finding the mass of the liquid without the container (subtract the mass of the container) on a TBB. Find the density by finding mass divided by volume. The units are g/mL.
Mira is testing objects for her science experiment. She has a list of densities but she is trying to figure out which object has a mass of 27 grams. If each object had a volume of 3 cm3, which object has a mass of 27 grams?
a. 12 g/cm3
b. 9 g/cm3
c. 3 g/cm3
d. 6 g/cm3
Mass - ? Mass = Density x Volume
Volume = 3 x 9 = 27
b. 9 g/cm3
Two boxes have the same volume
Box A has a mass of 10 grams.
Box B has a mass of 100 grams.
Which box is more dense?
Box b since it has more mass in a given volume.