1. Photosynthesis Claim, Evidence, Reasoning
Proving plants need both CO2 and light for photosynthesis.
Photosynthesis Claim, Evidence, Reasoning

2. How can you prove all of these things are needed?.
What are the “ingredients” for photosynthesis?.
How can you prove all of these things are needed?.

3. Bromothymol Blue (BTB) is a carbon dioxide indicator.

6. Appearance at the Start
Do all the test tubes have carbon dioxide? A B C

7. Appearance at Start

8. So where did photosynthesis take place?
The Results
So where did photosynthesis take place? A B C

9. This should be helpful for #5.

10. This should be helpful for #6.
BE CAREFUL! This diagram is missing one product. Be sure to think it through and label where that missing product would go.
This should be helpful for #6.