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Abstract
Previously students have researched the origins of their product
and discovered the chemical and physical properties of their raw
materials and products. Students will now analyze the process of
making their product as well as determine methods to test their
product for desired qualities. This will be performed before they
actually make their product, the next step in the process.
Lesson fundamental understandings:
Essential
Questions: 1. What is the balanced equation for my
product?
2. What type of chemical reaction is used to make my
product?
3. Is this an exothermic or endothermic reaction?
4.
What are the 3 most desired qualities of my product?
5. What are
ways that I can test the desired qualities of my product?
Standards
National Standards Mathematics is
essential in scientific inquiry. Mathematical tools and models guide
and improve the posing of questions, gathering data, constructing
explanations and communicating results. * Scientific explanations
must adhere to criteria such as: a proposed explanation must be
logically consistent; it must abide by the rules of evidence; it
must be open to questions and possible modification; and it must be
based on historical and current scientific knowledge.
State Standards Nevada: 4.12.1
Investigate and describe how , in chemical reactions, elements
combine in predictable ratios, and the numbers of atoms of each
element do not change 20.12.1 Use mathematical symbols and formulas
to express relationsihps that behave in the same ways as the objects
or processes under investigation 4.12.3 Investigate and describe how
chemical reactions may release or consume energy 24.12.5 Write
procedures for the investigation of delegated or original scientific
problems 24.12.6 Carry out an independent scientific investigation
24.12.4 Maintain a permanent record of procedures, data, analyses,
decisions and understandings of scientific investigations
Lesson
Prerequisite Skills
Content area skills: 1. naming compounds and writing formulas 2.
writing and balancing equations 3. assess a formula and determine
reaction type 4. determine whether a reaction is exothermic (gives
off heat to surroundings) or endothermic (absorbs heat from
surroundings) Laboratory skills: 1. be familiar with basic safety
rules and procedures Information and Technology skills: 1. Internet
research skills
Teacher
Information/Situations/Setting/Time Time Frame:
1.
This should take 15 minutes of introduction and discussion by the
teacher. The work should be done by students on their own
time.
NOTE: The teacher may wish to embed this portion of the
quarter project at the end of the unit: Chemical Equations and
Reactions rather than doing the entire project during the
stoiciometry unit.
Assessment
Students will make entries in a project journal during the entire
process. At specific times, the journal will be turned in along with
the appropriate evaluation form. Students will rate their work as
Satisfactory (S) or Unsatisfactory (U). Each will sign the statement
and make any comments they deem necessary for the teacher's
clarification (i.e., someone absent; one student doing writing
primarily and the other doing the laboratory work, etc)
See
Step 3 Evaluation Form (attached)
Student Activity/Tasks Students will
perform all tasks as described in Step 3 Worksheet (attached)
Enrichment/Alternate Activity:
Students may wish to share some of the tests they devised with
the class. A classroom discusion may be appropriate.
Cross-Curricular:
Math - determining equalities
Technology
Requirements/Tools/Materials
Internet access, on-line encyclopedias or discs such as Encarta
Acknowledgements:
Additional Resources
Main
URL:
Related Lessons
Related Resources
Step
3 Worksheet
Copyright © 1997-2003
Career Connection to Teaching with Technology
USDOE Technology Innovation Challenge Grant
Marshall Ransom, Project Manager
All rights reserved.
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