Classify the substances by whether they are soluble or insoluble in water. Soluble in water Insoluble (or very low solubility) in water SO2 (a polar gas) C3H7OH (a polar liquid) C6H14 (a nonpolar liquid)
NaCl (table salt, an ionic solid) C (graphite, a nonpolar solid) CH4 (a nonpolar gas)