Friday, July 30, 2010

CHEMICAL CHANGES INVOLVING LIGHT


Photosynthesis

Chlorophyll absorbs sunlight then photosynthesis turns carbon dioxide, water and sunlight into carbohydrate molecules.These carbohydrates are used by all living things as fuel for energy, and as building blocks to build more pieces of themselves.

The reaction of photosynthesis utilizes six carbon dioxide molecules and six water molecules to produce one sugar molecule (glucose) and six oxygen molecules.


Photosynthesis is the process by which plants and some single-celled organisms produce sugars from sunlight and carbon dioxide. These sugars then become the food used in cellular respiration. In plants, photosynthesis occurs in specialized structures known as chloroplasts.

This reaction is endothermic because it takes in light energy.

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