Question

which choice is an element?
o potassium
o sugar
o salad
o water

Explanation:

An element is a pure substance that cannot be broken down into simpler substances. Potassium (K) is an element on the periodic table. Sugar (e.g., sucrose \(C_{12}H_{22}O_{11}\)) is a compound. Salad is a mixture of different substances (e.g., vegetables, dressings). Water (\(H_2O\)) is a compound made of hydrogen and oxygen.

Answer:

Potassium.