photosynthesis
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Photosynthesis. By: Sydney Thib, Michelle Kee, Kersti Sorra. Photosynthesis is a biochemical process in which plants, algae, and some bacteria harness the energy of light to produce food. Evidence of Chemical Change - PowerPoint PPT PresentationTRANSCRIPT
Photosynthesis
By: Sydney Thib, Michelle Kee, Kersti Sorra
Photosynthesis is a biochemical process in which plants, algae, and some bacteria harness the energy of light to produce food.
Evidence of Chemical Change
•Colour of leaves change from brown to green throughout photosynthesis. •Oxygen gas is produced.
Photosynthesis Equation
Photosynthesis is a double displacement reaction
Carbon Dioxide + Water + light energy → Glucose + Oxygen Gas
CO2 + H2O + Energy → C6H12O6 + O2
Reactants Covalent Covalent Covalent
carbon dioxide + water + light energy
CO2 + H2O + Energy
Products Covalent Covalent
glucose + oxygen gas
C6H12O6 + O2
Setting and Background
Photosynthesis provides nutrients, and oxygen for its surrounding organismes.
Some scientists that added insight on Some scientists that added insight on photosynthesis:photosynthesis:
Jan Baptista van Helmont John Woodward Joseph Priestley (1600’s) (1600’s) (1700’s)
Scientists• Jan Baptista van Helmont, in the 1600s carried out a famous
experiment. Van Helmont believed that water was the source of the extra mass and the plant's source of life.
• John Woodward, in the late 1600s, tried to design an experiment to test Van Helmont hypothesis that water was the source of the extra mass. In a series of experiments over as many as 77 days, Woodward measured the water consumed by plants.
• Joseph Priestley offered an interesting hypothesis that plants restore to the air whatever breathing animals and burning candles remove.
Bonding
+
(Carbon Dioxide) (Water/ Oxygen Dihydride)
+ (Glocose) (Oxygen Gas)
Educational Video
http://www.youtube.com/watch?v=C1_uez5WX1o
Bibliography
• "PHOTOSYNTHESIS." PHOTOSYNTHESIS. N.p., n.d. Web. 20 Dec. 2012. <http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookps.html>.
• "Photosynthesis." Photosynthesis. N.p., n.d. Web. 20 Dec. 2012. <http://biology.clc.uc.edu/courses/bio104/photosyn.htm>.
• "THE PHOTOSYNTHESIS SONG." YouTube. YouTube, 18 Mar. 2009. Web. 20 Dec. 2012. <http://www.youtube.com/watch?v=C1_uez5WX1o>.