1. Introduction to Photosynthesis
Who was important in helping us know what we know today about Photosynthesis?
Where does the mass of plants come from when they grow?
What is the chemical equation for Photosynthesis?

2. Demonstration We haven’t always known about oxygen and photosynthesis.
People from the past have made discoveries that have built a basis for what we know now.
Jar/Candle/Plant Demo

3. 1643 – Jan Baptista Van Helmont

4. 1774 – Joseph Priestly – oxygen/candle

5. 1778– Jan Ingenhousz

6. 1796 – Jean Senebier

7. 1804 – Nicolas Saussure

14. Chemical Equation for Photosynthesis

15. Six molecules of ____________ _______________ plus six molecules of _____________, using__________ energy trapped by chlorophyll, produce one molecule of __________________ plus six molecules of ______________.