Ethyl acetate is one of the simplest carboxylate esters. (Former Molecule of the Week methyl formate is the simplest.) The colorless liquid has a sweet, fruity odor that most people find pleasant.

On-Site Clip paper clips to opposite sides of the petri dish, with longer ends on the inside, nearly touching the bottom. Place the petri dish on a piece of white paper for easier viewing; if using an ...