1. Lesson Twelve Recipe for Energy—Cellular Respiration
There are four different experiments in this
lesson. Will you pick one and do a test, or do
this for each experiment? See the NOTE on
p 141 of the Teacher’s Manual. Plan on 3-4
days for this lesson.
Teacher Tips:
Add baking soda to make it solution more blue and ammonia to make it more yellow
Larger test tubes make it easier to see
Cover fire safety pg 100
Use 25mL not 10mL graduated cylinders
Can also use pH paper to show changes
Have a control test tube of bromthymal blue

2. Objectives
Compare and contrast combustion and cellular respiration
Use a model to show the flow of air and the parts of combustion
Determine the form of energy released in exhalation
Use an indicator to detect waste products in exhaled air
Bellwork
Read “Oxidation—One Process, Two Forms” p 99 SG and define the words oxidation, combustion and cellular respiration
(Try to resist the urge to define the terms yourself as you go over the bellwork. Use them, but don’t necessarily try to nail them down at this time. Remember, we are engaging, not explaining!)

3. Getting Started pg 100 Question
What happens if a burning candle is covered with foil?
Hypothesis
If a burning candle is covered with foil then it will _______ because ______
Materials
Candle, beaker, block, bromthymal blue, foil, graduated cylinder

4. Observations- answer questions
Procedure
Safety tips p 100 SG
Getting Started p 100
Follow instructions in steps 3-6
Observations- answer questions
Step 4 (5 questions)
Step 5 (3 questions)
Step 6 (3 questions)
Answer the original questions and restate
hypothesis as a conclusion
Next Question (end of day 1?)
Conclusion

5. Conclusion Next Question Inquiry 12.1 Question Hypothesis Procedure
What happens to the temperature of water when exposed to exhaled air?
Hypothesis
If water is exposed to exhaled air then the temperature will___________ because __________
Procedure
Follow steps 1-4 on p 102
Data/ Observation- answer questions
Step 1 (3 ques.)
Step 3 (4 ques.)
Conclusion
Answer original question and restate hypothesis as a conclusion
Next Question

6. Inquiry 12.2 p 103 Question Hypothesis Procedure - p 103 Data
What is a waste product of cellular respiration?
Hypothesis
If _____ is a waste product then the solution will turn _________ because ____________
Procedure - p 103
Teacher demonstrates this procedure-HEALTH CONCERNS
Data
Answer question in step 7 – (4 questions)
Conclusion
Statement of results
Next Question

7. Inquiry 12.3 p 104 Question Hypothesis Materials Procedure - Data
Can carbon dioxide pass through a membrane?
Hypothesis
If carbon dioxide is _________ then it will pass through a membrane because ____________
Materials
Carbonated water, funnel, graduated cylinder, membrane, string test tube and rack, bromthymol blue,
Procedure -
Follow steps A-F under step 2 p 104 (use 13 mL of carbonated water)
Data
Answer questions 1-4 under step F
Conclusion
Answer original question and restate hypothesis as conclusion
Next Question

8. Reading Spies-Why So Many? p 108 Vocabulary alveoli bronchi
capillaries
mitochondria
cellular respiration
oxygen
carbon dioxide
nutrients
energy

9. Reflections
(may spend a whole day answering and reviewing reflection questions)
Step 2 Questions A – G
Venn Diagram: Combustion and Cellular Respiration (could be homework)
(Preparation for lesson p 148 Teacher’s Manual)