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Name: _________________________ Period: ________
Stoichiometric Torpedoes – Lab Packet
Time Line:
Monday 5/18 – Construct three torpedoes based on design from day 1
Tuesday 5/19 – Finish construction and collect data
Wednesday 5/20 – Finish Data collection and start paper (Computers)
Thursday 5/21 – Write paper (NO LAB TIME)
Friday 5/22 – Write Paper (NO LAB TIME)!
Tuesday 5/26 – Paper DUE
Part 1 – Torpedo Design:
1. Draw a detailed picture of your torpedo. Be sure to label all parts and materials used.
2. Construct ONE prototype of your design to test in lab. Test once constructed. What observations do you
notice? List any changes you would make.
3. Draw a revised picture of your torpedo with any changes made after the initial test.
4. Construct THREE of your revised torpedoes.
Part 2 – Proceedure and Data Collection:
In your prelab you calculated the perfect amount of reactants needed to propel your torpedo the farthest. These
amounts will be trial 1. Trials 2 and 3 will be smaller amounts of either baking soda or vinegar. ONLY one of
these can be changed!
1. Write a procedure for filling your torpedoes and collecting data. Be sure to mention recording mass of
vinegar, mass of baking soda, distance and time.
2. Collect data into the following data table.
Raw Data Table
Vinegar Total(g)
Baking soda (g)
Distance (cm)
Trial 1
Trial 2
Trial 3
3. Perform calculations as instructed below. (Use scratch paper if you need more room)
a. Actual Mass of Vinegar (Similar to part D in Pre Lab)
i. Trial 1
ii. Trial 2
iii. Trial 3
Time (s)
b. Speed Calculation (Distance/Time)
i. Trial 1
ii. Trial 2
iii. Trial 3
c. Amount of CO2 produced based on the masses of 5% vinegar and baking soda used.
i. Trial 1
ii. Trial 2
iii. Trial 3
4. Use the answers from your calculations to fill in the data table below:
Processed Data Table
Vinegar 5% (g)
Distance/Time
CO2 Produced (g)
Trial 1
Trial 2
Trial 3
Name: _________________________ Period: ________
Lab Report
The lab report for this project must be typed and organized according to the following outline. It must also
include a title and your name and hour in the upper right hand corner.
This paper is to be done INDIVIDUALLY!
This form MUST be turned in when you turn in your paper!
Use the headings for each section:
I.
Purpose
Copy and paste the statement below into this section of your paper:
“To determine if the ideal stoichiometric ratio of baking soda to vinegar
makes a torpedo travel the furthest.
- “
II. Hypothesis
States a clear hypothesis in If…, then,…because”. format using scientific language.
- This should be part H of your prelab. You may need to reword it.
- Your “because” portion could be your calculations for the max amount of CO2 produced
III. Variables
Describes all the types of variables: independent, dependent and control
- Independent: What did you change the amount of?
- Dependent: What changed as a result? (What did you calculate?) **There are multiple answers
- Controls: What measured amounts did you keep the same?
IV. Procedure
What was your process?
- How did you make your torpedo? (This should include steps and a labeled picture, See Part 1)
- How did you collect your data? (see Part 2 number 1)
V. Data Table and Calculations
What was your data?
- Raw data table (See Part 2 number 2)
- What calculations did you do? (See Part 2 number 3)
- Calculated data table (See part 2 number 4)
- If you are struggling to type this section, you may write in your paper to “Refer to written
calculations”. Your teacher will look at your lab packet for grading this section.
VI. Conclusion
- What does your data tell you about which torpedo went the furthest distance?
- What does your data tell you about which torpedo went the fastest speed?
- What does your data tell you about which torpedo produced the most CO2?
- How do the answers to the last 3 questions relate to your hypothesis?
- Were there any problems with your method design (making and testing your torpedo)?
- Discuss any ways you could improved your results
- Questions for future investigations
Your paper is due on Tuesday May 26, 2015 in class.
You can turn it in via email, sharing on GoogleDocs or hard copy.
Grade: ____________/40
Criterion B: Inquiring and Understanding (year 5)
Achievement level
II. Formulate a Testable
Hypothesis
III. Manipulate Variables and
Collect Data
IV. Design Scientific
Investigations
Highland Park Senior
High School Grade
MYP
level
0-59.99
0
60.0-69.99
1-2
Outline a testable hypothesis
Outline the variables
Design a method, with
limited success.
70.0-79.99
3-4
Formulate a testable
hypothesis using scientific
reasoning
Outline how to manipulate the
variables, and outline how
relevant data will be collected
Design a safe method in
which he or she selects
materials and equipment
80.0-89.99
5-6
Formulate and explain a
testable hypothesis using
scientific reasoning
Describe how to manipulate
the variables, and describe how
sufficient, relevant data will
be collected
Design a complete and safe
method in which in which he
or she selects appropriate
materials and equipment.
90.0-100.0
7-8
Formulate and explain a
testable hypothesis using
correct scientific reasoning
Explain how to manipulate the
variables, and explain how
sufficient, relevant data will
be collected.
Design a logical, complete
and safe method in which he
or she selects appropriate
materials and equipment
Student does not reach a standard identified by any of the descriptors below
Criterion C: Processing and Evaluating (year 5)
Achievement level
Highland Park Senior
High School Grade
MYP
level
0-59.99
0
60.0-69.99
1-2
70.0-79.99
3-4
I. Present data
II. Interpret
data
III. Evaluate
the hypothesis
IV. Evaluate the
method
V. Improvements
or extensions
The student does not reach a standard identified
Collect and
present data in
numerical
and/or visual
forms
Accurately
interpret data
Correct collect
and present
data in a
numerical
and/or visual
forms
Accurately
interpret data
and explain
results
80.0-89.99
5-6
Correctly
collect,
organize and
present data in
numerical
and/or visual
forms
Accurately
interpret data
and explain
results using
scientific
resonating
90.0-100.0
7-8
Correctly
collect,
organize,
transform and
present data in
numerical
and/or visual
forms
Accurately
interpret data
and explain
results using
correct
scientific
reasoning
State the validity
of a hypothesis
based on the
outcome of a
scientific
investigation
State the validity
of the method
based on the
outcome of a
scientific
investigation
Outline the
validity of a
hypothesis based
on the
Outline the
validity of the
method based on
the outcome of the
scientific
investigation
Outline
improvements or
extensions to the
method that would
benefit the
scientific
investigation
Discuss the
validity of the
hypothesis based
on the outcome
of a scientific
investigation
Discuss the
validity of the
method based on
the outcome of a
scientific
investigation
Describe
improvements or
extension to the
method that would
benefit the
scientific
investigation
Evaluate the
validity of a
hypothesis based
on the outcome
of a scientific
investigation
Evaluate the
validity of the
method based on
the outcome of a
scientific
investigation
State
improvements of
extension to the
method
Explain
improvements or
extensions to the
method that would
benefit the
scientific
investigation