2. Photosynthesis Students will understand that photosynthesis is the conversion of radiant light energy into chemical energy using water and carbon dioxide.

3. Photosynthesis W’s  What is photosynthesis?:  Photosynthesis is the process of taking 6CO2 and 6H20 and turning them into C6H12O6 and 6O2. This process is powered light energy from the sun.  Where does photosynthesis occur?:  Photosynthesis occurs in an organelle called the chloroplast.  When does photosynthesis occur?:  Photosynthesis occurs when a plant has access to CO 2 H 2 O and sunlight.  Who does photosynthesis?:  Plants and some protists engage in photosynthesis.  Why does photosynthesis occur?:  Photosynthesis evolved about 2.7 billion years ago. Primitive organisms had a limited supply of energy until photosynthesis came about. Now photosynthesis powers every living thing on the planet.

4. Photosynthesis Etymology  Photo – Light  Synth – create  Osis - The process of  The process of creating using light

5. Photosynthesis Equation What Does Photosynthesis Create?  Energy (ATP)  Sugar (Glucose)  Oxygen What Does Photosynthesis Need?  Carbon Dioxide  Water  Sunlight

6. Photosynthesis Equation 6H 2 O6CO 2 6O 2 C 6 H 12 O 6 Radiant Energy ++  + Water Carbon Dioxide Oxygen Glucose Sunlight ++  +

7. Chemical Names  CO 2 = Carbon Dioxide  (1 carbon and 2 Oxygen)  Makes up 4% of the atmosphere C O O

8. Chemical Names  H 2 O = Water  (Two Hydrogen and 1 Oxygen)  Collects in the soil after rain O H H

9. Chemical Names  C 6 H 12 O 6 = Glucose  6 Carbons  12 Hydrogens  6 Oxygen

10. Chemical Names  O 2 = Molecular Oxygen  (2 oxygen)  Makes up 21% of the atmosphere

11. 6H 2 O6CO 2 6O 2 C 6 H 12 O 6 Sunlight ++  + Water Carbon Dioxide Oxygen Glucose Sunlight ++  +

12. Activity 1.Use your atoms(fuzzies) to create 6CO 2 and 6H 2 O. 2.Show the process of photosynthesis by taking the atoms from your 6CO 2 and 6H 2 0 and turning them into 1 C 6 H 12 O 6 and 6O 2 3.Try to complete the photosynthesis equation with only 3CO 2 and 3H 2 0. What happens? O H C Oxygen HydrogenCarbon

13. Activity Assessment  Answer the following questions on your own piece of paper. 1.What two molecules are needed for photosynthesis? (You may write the name or chemical signature) 2.What two molecules are created at the end of photosynthesis? (You may write the name or chemical signature) 3.Why is it important for there to be 6 carbon dioxides and six waters in the equation for photosynthesis? 4.What provides the energy for the movement of these atoms? 5.In what organelle, does the process of Photosynthesis occur? 6.Write the chemical equation for photosynthesis using the proper chemical formula for each molecule.