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?

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

1643 – Jan Baptista Van Helmont

1774 – Joseph Priestly – oxygen/candle

1778– Jan Ingenhousz

1796 – Jean Senebier

1804 – Nicolas Saussure

Chemical Equation for Photosynthesis

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