Organic and Inorganic compounds

What elements do all organic compounds always contain?

Carbon and hydrogen.

What other elements are often found in organic compounds besides carbon and hydrogen?

Oxygen and/or nitrogen.

Give an example of an organic compound that contains carbon, hydrogen, and oxygen.

Glucose (C₆H₁₂O₆).

Give an example of an organic compound that contains carbon, hydrogen, nitrogen, and oxygen.

Glycine (C₂H₅NO₂), an amino acid.

How are organic compounds usually produced?

By living organisms or from the decay of dead organisms.

Name two examples of organic compounds that can come from the decay of dead organisms.

Crude oil and coal.

Can inorganic compounds contain carbon, hydrogen, oxygen, or nitrogen?

Yes — but they can be formed without the involvement of living organisms.

Give examples of inorganic compounds that contain carbon.

Carbon dioxide (CO₂) and hydrogen carbonate ions (HCO₃⁻).

Give an example of an inorganic compound that contains hydrogen and oxygen but no carbon.

Water (H₂O).

What does the term “biochemicals” refer to?

Compounds made by and found in living organisms.

What are the three main types of biochemicals in this topic?

Carbohydrates, lipids, and proteins.