Peanut Butter and Jelly Lab

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Peanut Butter and Jelly Lab
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• Name
• I. Title Peanut Butter and Jelly Lab
• II. Purpose To make a peanut butter and jelly
  sandwich.

Label everything with roman numerals. Use
the given title for your lab Restate and
expand on the purpose given on the lab handout.
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III. Background Before beginning this lab, be
sure to check for allergies. Lab participants
with allergies to peanuts or wheat should be
cautious during the process of the lab. Peanut
butter, jelly, and bread can be reacted together
to create a nutritious lunch. The solutions of
peanut butter, P, jelly, J, and bread, B, are
mixed to create a peanut butter and jelly
sandwich, PB2J. All three reactants are used in
their natural states. The reaction is shown below
in Equation 1. P(s) J(l) 2B(s) ? PB2J(s)
(Eqn. 1) In the course of the experiment one
will place P and J on the two separate B. Then
put the 2 B together so that the P and J are both
concealed within the B.
Write in paragraphs Summarize procedure
Define words Include equation Third person
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Using stoichiometry, the quantitative
relationship among the amounts of reactants and
products, one can determine how much P, J, and B
are needed to create the desired amount of PB2J
(Neidig 2). The desired amount of product is 1.00
PBJ. The reaction can only proceed as long as
there is sufficient P, J, and B present to react.
For example, if 12 J react with 30 B and 5 P, one
would only be able to create 5 PB2J. In this
example, P is the limiting reactant. This is the
substance that is completely used up within the
reaction. Thus, the stoichiometry of the
reaction and the amount of limiting reactant
available determine the theoretical amount of
product that can be formed. After an experiment,
the actual yield of a reaction is seldom equal to
the theoretical yield. This can occur for a
number of reasons but is quantitatively measured
as the percent yield. This value is calculated
using Equation 2. percent yield (actual
yield/theoretical yield)x 100 (Eqn. 2) This lab
requires prior knowledge of balancing a chemical
reaction, predicting products and understanding
how they react, as well as the ability to work
common kitchen utensils, such as a knife. As a
safety precaution, wash your hands thoroughly
with soap before beginning the lab. This
decreases the chance of ingesting unanticipated
materials from the environment.
Write in paragraphs Summarize procedure
Define words Include equation Third person
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• IV. Materials/Illustrations
• 1 Jar of Jelly
• 1 Jar of Peanut Butter
• Knife
• Bread
• Spoon
• Plate
• Napkin

• Include numbers
• Use correct vocabulary

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• Label illustrations
• Use only clear and relevant illustrations

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V. Variables
Affecting Variables How to Control
Type of Peanut Butter Type of Jelly Type of Bread Buy the type of reactants which you prefer.
Amount of Jelly and Peanut Butter Add desired amount of jelly and peanut butter to bread.
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VI. Procedure Lets see what you have.

• Be detailed
• Include numbers
• How, how, how

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VII. Observations and Data

• Data collected,
• Not data given
• Not data calculated

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VIII. Calculations/Data Analysis Determine
amount of each reactant needed to create 1.00
PB2J. Peanut Butter 1.00 PB2J 1 P 1.00
P 1 PB2J Jelly 1.00 PB2J 1J 1.00
J 1 PB2J Bread 1.00 PB2J 2 B 2.00
B 1 PB2J Determine Percent Error percent yield
(actual yield/theoretical yield) x 100
percent yield (actual yield/1.00 PB2J)
x 100 percent yield
Narrate calculations
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• IX. Conclusions/Error Discussion
• Purpose
• Describe procedure
• Results
• Factors that effect
• Results could be improved if
• Take experiment further by

• Explain how errors effect results
• Summarize

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• Work Cited

Neidig, Anthony. CHEM 111.1 Laboratory Manual.
Pacific Grove, CA Brooks/Cole, 2001.
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• Previous Lab Write-Up Concerns
• 3rd person
• Should not include Ms. Bjorge or instructor
• Remember your writing skills
• Cite everything you look up