Exercise 1 | Atoms and Molecules

Classify each of the following as elements, compounds, heterogeneous mixture, or homogeneous mixture:

salt water

silver

salt and sugar

air

carbon dioxide

diamond (C)

sodium chloride

oil and water

ice

salt water: homogeneous mixture

silver: element

salt and sugar: heterogeneous mixture

air: homogeneous mixture

carbon dioxide: compound

diamond (C): element

sodium chloride: compound

oil and water: heterogeneous mixture

ice: compound