Explain the observed results, which of the following substances would you expect to dissolve in an organic solvent hut not in water? explain your answers. margarine naphthalene sodium bicarbonate sucrose part b: comparison of melting points most solid organic compounds (covalent compounds) have low melting points that are below 350° c. some organic compounds are gases or liquids at room temperature. usually inorganic compounds (ionic compounds) have high melting points that are above 350° c the bonds that exist between molecules of organic compounds are weaker than the bonds of inorganic compounds. therefore, less energy (lower temperature) is required for molecules of organic compounds to change from the solid state to the liquid state than for inorganic compounds to change from the solid state to the liquid state. procedure your teaching assistant will demonstrate the safe use of bunsen burners to heat samples. always be very careful when working with open flames in a chemistry laboratory! place about 0.1 g of sucrose in an evaporating dish. heat the evaporating dish containing the sucrose to determine if the sucrose will melt. place about the same amount of solid sodium chloride in the evaporating dish. heat to determine if the sodium chloride will melt.