Lab 3 Data analysis and Graphing - Science
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Lab 3 Data Analysis & Graphing
CHEM101L
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions:
1. In your own words, describe how to calculate density.
Click here to enter text.
2. Explain why the metric system is used in science.
The metric system is used in science because metric unit are decimal-based, decimal-based
numbers are easy to convert by moving the decimal point.
3. In any given experiment, how is it possible for your experimental technique to be both accurate
and precise?
For an experiment to be accurate may be increased by a proper analysis of the experimental
desigh and experimental conditions. The precision of an experimal result indicates by the
increasing the number of measurements.
4. If you are changing m to cm, what direction do you move the decimal point?
Simply moving the decimal point to the right or left.
Experiment 1: Metric Measurement Lab
Table 1: Length of Materials
Material
Meters (m)
Centimeters (cm)
Millimeters (mm)
Kilometers (km)
Diameter of
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penny
text.
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text.
text.
Height of
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counter/table
text.
text.
text.
text.
Width of
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textbook
text.
text.
text.
text.
Lab 3 Data Analysis & Graphing
CHEM101L
Length of
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room
text.
text.
text.
text.
Table 2: Mass of Materials
Material
Mass of a penny
Mass of empty 10
ml graduated
cylinder
Mass of 10 mL
graduated cylinder
with 10 mL water
Mass of a pencil
Grams (g)
Centigrams (cg)
Milligrams (mg)
Kilograms (kg)
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Lab 3 Data Analysis & Graphing
CHEM101L
Table 3: Volume of Materials
Volume
2 mL
5 mL
6 mL
9 mL
Liters (L)
Centiliters (cL)
Milliliters (mL)
Kiloliters (kL)
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Post-Lab Questions
1. In the metric system what unit of measurement is used for volume?
Click here to enter text.
2. Describe the table that you measured and how the measurement was conducted.
Click here to enter text.
3. Why were you asked to use a 10 mL graduated cylinder to measure volume instead of a 250
mL beaker?
Click here to enter text.
4. Describe the room you measured and how the measurement was conducted.
Click here to enter text.
Experiment 2: Density of a Gummy Bear
Lab 3 Data Analysis & Graphing
CHEM101L
Table 4A: Day 1 Mass Data
Materials
Grams (g)
A. Weight of Paper Towel
Click here to enter text.
B. Weight of Paper Towel
Click here to enter text.
with Gummy Bear
Weight of Gummy Bear (A-
*Record this Value in Table 5
B)
Table 4B: Day 2 Mass Data
Materials
Grams (g)
A. Weight of Paper Towel
Click here to enter text.
B. Weight of Paper Towel
Click here to enter text.
with Gummy Bear
Weight of Gummy Bear (A-
*Record this Value in Table 5
B)
Table 5: Density Gummy Bear Data
Day
Day 1
Day 2
Start
Time
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here
to
enter
text.
n/a
Stop
Time
n/a
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here
to
enter
text.
Bear
Color
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here
to
enter
text.
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here
to
enter
text.
Head to
Toe
Length
Arm to
Arm
Width
Volume
Mass
Density
(cm3)
(g)
(g/ cm3)
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here to
enter
text.
Front to
Back
Thicknes
s (cm)
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here to
enter
text.
(cm)
(cm)
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text.
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Lab 3 Data Analysis & Graphing
Start
Time
Day
n/a
Difference
(Day 1- Day 2)
Stop
Time
n/a
Bear
Color
Click
here
to
enter
text.
Head to
Toe
Length
Arm to
Arm
Width
(cm)
(cm)
Click
here to
enter
text.
Click
here to
enter
text.
Front to
Back
Thicknes
s (cm)
Click
here to
enter
text.
CHEM101L
Volume
Mass
Density
(cm3)
(g)
(g/ cm3)
Click here
to enter
text.
Click
here
to
enter
text.
Click
here to
enter
text.
Post-Lab Questions:
1. What was your hypothesis as to what would happen to the gummy bear? Was it correct?
Click here to enter text.
2. How long did your gummy bear soak? What do you think would have happened if you left it in
for twice as long?
Click here to enter text.
3. Which change was greater, volume or mass? Explain your answer using scientific logic.
Click here to enter text.
4. Which piece of information recorded in the data table do you think is least important? Explain
why you think this is and why it had no effect on the results of the experiment.
Click here to enter text.
5. How did the changes in mass and volume from Day 1 to Day 2 affect the density of your bear?
Click here to enter text.
6. How could you get more accurate results from this lab? List and explain one way you could
reduce your errors.
Click here to enter text.
Lab 3 Data Analysis & Graphing
CHEM101L
7. Using the sheet of graph paper in your kit, create a bar graph using the data in Table 5 to
compare the density obtained for each day studied. You can also use a graphing program to
create this graph.
Hint: In order to scale the graph, you take the range of the numbers (the highest number and
the lowest number), subtract them and divide by the number of lines on your graph. This will
tell you how to divide up your graph evenly so it’s not all squished onto one area of the graph.
Hint: The dependent variable is placed on the Y axis when the independent variable is placed on
the X axis. When you create your graph, remember that the X and Y axes need to be labeled and
you should give a title to your graph.
Insert a picture of your graph.
8. Insert a final picture of your experiment with your name and access code handwritten in the
background.
Lab 3 Data Analysis & Graphing
CHEM101L
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