Rate of reaction experiment

Description

Rate of reaction experiment worksheet.

I have attached the direcions and rubric.

Thank you in advance.

Design Your own Experiment: Factors that
Affect the Rate of a Reaction
Introduction:
An antacid tablet contains citric acid and sodium bicarbonate (baking
soda). When you drop the tablet in liquid, the acid and the baking soda
react – this produces the fizz.
3 HCO3-1(aq) + H3C6H5 O7 (aq)
bicarbonate ion
citric acid

3 CO2 (g) + 3 H2O + C6H5O7-3(aq)
citrate ion
Several factors affect the rate of a reaction. In this investigation, you
will design experiments to test three factors that may affect the rate of
the reaction that takes place when an antacid tablet dissolves in a
liquid.
Possible Materials:
jars, antacid tablets, water, ice, timing device, thermometer, vinegar
(an acetic acid solution), salt, measuring spoons, measuring cups
Procedure:
1. Choose three factors to investigate.
2. Form hypotheses about how the factors will affect the rate of the
reaction.
3. List the steps you will follow to test your hypotheses. Consult with
your Learning Coach before performing your experiments.
4. Carry out your experiments. Be sure to adhere to lab safety rules
as you perform the experiments.
5. Record your observations.
6. Draw conclusions from your experiments. Describe the relationships
between the three factors you tested and the rate of the reaction.
Explain whether or not your results support your hypotheses. Note
any sources of errors.
7. Complete a formal laboratory report which includes a heading,
materials, hypotheses, procedures, data, and conclusions.
Science Lab Grading Rubric – Design Your Own Lab
Heading
Exemplary (3 pts)
n/a
Materials
Hypothesis/
Introduction
Procedures/
Plan
Data
Note:
Data will not
always include
tables,
diagrams, or
graphs
Conclusions
Developing (1 pt)
Missing one
component
Unsatisfactory (0 pts)
Missing two or more
components
n/a
Satisfactory (2 pts)
Contains lab title,
student name, date,
course, unit, lesson
All materials listed
Most materials listed
Provides a clear and
thorough explanation
of purpose
Provides a clear
purpose with some
explanation
Exemplary (6 pts)
Clear step-by-step
description of
experimental
procedures
Includes all
formulas/calculations
used to analyze data;
records all
observations;
includes tables/
diagrams/graphs, as
necessary
Uses data effectively
as evidence to
support conclusions/
answers
Satisfactory (4 pts)
Step-by-step
description that
misses not more than
one key detail
Includes most
formulas/calculations
used to analyze data;
records observations;
includes tables/
diagrams/graphs, as
necessary
Uses data somewhat
effectively to support
conclusions /answers
Provides a purpose
that is clear but
provides little or no
explanation
Developing (2 pt)
Step-by-step
description that
misses not more than
two key details
Includes some
formulas/calculations
used to analyze data;
records some
observations;
includes some
diagrams/tables
/graphs, as necessary
Uses data to support
some conclusions/
answers
Some or few materials
listed
Purpose is unclear
Answers most
assigned questions
Answers some
assigned questions
Answers few assigned
questions
Uses scientific terms,
as necessary
Usually uses
scientific terms, as
necessary
Sometimes uses
scientific terms, as
necessary
Does not use scientific
terms, as necessary
Clearly explains
results
Clearly explains
results
Somewhat clearly
explains results
Always uses proper
grammar
Usually uses proper
grammar
Sometimes uses
proper grammar
Answers all assigned
questions
Heading
Materials
Hypothesis/Introduction
Procedures
Data
Conclusions
/2
/2
/3
/6
/6
/6
Total score
/25
©2007 Connections Academy, LLC. All Rights Reserved.
Unsatisfactory (0 pts)
Description lacks
more than two key
details
Includes few or no
formulas/ calculations
used to analyze data;
records few or no
observations; includes
no tables/
diagrams/graphs
Does not use data to
support conclusions
/answers
Does not clearly
explain results
Sometimes uses
proper grammar

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