Understanding Chemical Compounds in Photosynthesis

What is a chemical compound?

• A single atom

• A mixture of gases

• A type of plant

• Two or more atoms combined

Which elements combine to form water?

• One carbon atom and two oxygen atoms

• Two hydrogen atoms and one oxygen atom

• Two carbon atoms and one hydrogen atom

• Two oxygen atoms and one hydrogen atom

What is the chemical formula for water?

• H2O

• CO2

• H2

• O2

How is carbon dioxide formed?

• By combining two carbon atoms and one oxygen atom

• By combining one carbon atom and two oxygen atoms

• By combining two hydrogen atoms and one oxygen atom

• By combining one hydrogen atom and two carbon atoms

Why is carbon dioxide important for plants?

• It is a waste product

• It helps in water absorption

• It provides energy for growth

• It is essential for photosynthesis