What are neutrons?

What term refers to a condition characterized by symptoms including low mood, loss of interest, loss of energy, weight changes and possible thoughts of suicide?

What is an antacid?

What term refers to the  wearing down of the stomach and esophagus tissue, resulting in frequent stomach pain, especially after eating>

What term refers to a persistent, irrational fear of a specific or particular object or situation or activity that compels a desire to avoid it?

What is a halogen element, commonly a gas, that is a strong oxidizer with a strong ordor?

What era physiologically active organic compounds containing an aromatic ring and a three-carbon chaon?

What term refers to fatty acids that contain no double bonds?

What are terpenoid compounds?

What are peptide bonds?