Photosynthesis: What is happening?. Have you ever heard water being called by a different name?
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Transcript of Photosynthesis: What is happening?. Have you ever heard water being called by a different name?
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Photosynthesis:
What is happening?
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Have you ever heard water being called by a different name?
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HO
H
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Have you ever heard carbon dioxide being called by a different
name?
Carbon dioxide bubbles in a glass of soda.
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O C O
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Both water and carbon dioxide
play an important part
in photosynthesis.
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Water comes up the stem and into the leaves
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Carbon dioxide enters the stomata (openings) in the underside of the leaf.
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Your desktop is going to be the inside of the leaf.
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On your desk make as many
water molecules as
you can
HO
H
On your desk make as many carbon dioxide molecules as
you canO C O
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Energy from the
Sunis
absorbed by the
plant
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Chemical Reaction
The bonds holding
the water and carbon dioxide
together are broken.
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Sugar is made by the plant.
So what does a sugar particle look like?
Let’s see…..
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Sugar is the product C H O6 12 6
C C C C C C
O
OOO
O O
H H
HH
H
H H H H
HHH
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What do you notice?
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What is left over?
Have you ever heard the saying, “Plants make oxyge
n”?
O OO2
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How many oxygen gas molecules were you able to put
together?How does the oxygen get
into the atmosphere?
Click here to see…
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The sugar stays in the
leaf.
When animals eat the plant, they get the
sugar as food.
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Carbon + water + lightdioxide energy sugar +
oxygen
CO2
H O+2
+lightenergy C H O6 12 6
+ O2
Photosynthesis