And don't look it up give a real answer and sooo much why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?

Photosynthesis is a chemical reaction

Explanation:

In which carbon dioxide (CO₂)and water (H₂O) are converted into glucose (C₆H₁₂O₆) and oxygen (O₂ ) with the help of chlorophyll and enzyme RuBisCO. It is classified as an endothermic reaction as it requires the input of energy in the form of solar energy.

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

i can ! i just need to know what the paragraph is! : p