Why Do Salts Dissolve

On the experiment 1 solvent abilities: All solutes were expected to dissolve in water because water is known as “universal solvent.” Observation showed that many salts and sugars were able to fully dissolve in the water solvent, but corn oil did not (Figure1).The reason salts would dissolve into water solvent because water molecule carried partial positive charge on hydrogen atom and partial negative charge on oxygen atom; they could react with cation and anion from salts that have ionic bonds (Reece, etc. 2011). Therefore, salts such as sodium chloride magnesium sulfate would fully dissolve. Our data indicated that sodium chloride was not fully dissolved (Table 1), which it was not expected. That could be caused from adding too much salts into a little bit amount of water. Water …show more content…
In order for these plants to grow, they need go through the photosynthesis step. Some water can escape during photosynthesis; then colored water would climb up from their roots to their leaves like how water climbed up to the tubes. In this section of the density experiment, water density was expected to be denser than ethanol and oil, and the result met what it was expected. The literature density of water was found to be 1.00 g/cm3 (Tro 2011); the literature density of ethanol was found to be 0.789 g/cm3 (Tro 2008). The literature density of corn oil was found to be 0.928 g/cm3 (Hodgman 1924). From these evidences, water shows that it has the highest density among three liquid. Overall, this experiment supported our hypothesis. Water was found to have good solvent abilities, neutral PH, high heat capacity, high surface tension; water was also found to be cohesive, adhesive, and denser. Some of these properties were not found on corn oil and ethanol, so it was supported that water is different from other