Photosynthesis:

What is happening?

Have you ever heard water being called by a different name?

HO

H

Have you ever heard carbon dioxide being called by a different

name?

Carbon dioxide bubbles in a glass of soda.

O C O

Both water and carbon dioxide

play an important part

in photosynthesis.

Water comes up the stem and into the leaves

Carbon dioxide enters the stomata (openings) in the underside of the leaf.

Your desktop is going to be the inside of the leaf.

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

Energy from the

Sunis

absorbed by the

plant

Chemical Reaction

The bonds holding

the water and carbon dioxide

together are broken.

Sugar is made by the plant.

So what does a sugar particle look like?

Let’s see…..

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

What do you notice?

What is left over?

Have you ever heard the saying, “Plants make oxyge

n”?

O OO2

How many oxygen gas molecules were you able to put

together?How does the oxygen get

into the atmosphere?

Click here to see…

The sugar stays in the

leaf.

When animals eat the plant, they get the

sugar as food.

Carbon + water + lightdioxide energy sugar +

oxygen

CO2

H O+2

+lightenergy C H O6 12 6

+ O2

Photosynthesis