3. Do you think sugar or salt will melt at a higher temperature? Explain your answer. Since sugar is composed of covalent bonds and salt …show more content…
4. In Part 1, why did you observe a stream of bubbles coming off the steel screw in the salt solution? The salt solution created much more of a reaction and needs a much higher transfer of energy in order to react. The high transfer of energy created constant bubbles, where as with the sugar it did not. Perhaps the transfer of energy was so much for the salt solution that there were only really brief reactions. However, with the salt solution it needs so much energy in order to change so when all the energy is created in the salt solution, there is a much larger reaction.
5. Explain any changes that took place on the nail. The part of the nail that was exposed to the water changed in each solution. When it was in the sugar solution, the color changed very, very slightly. However, when the nail was placed in the salt solution, the part that was exposed changed a lot. The part that was in the salt solution became much darker than the part that was not in the salt solution.
6. In Part 2, which of the substances had the lower melting point? Was this what you expected? Explain your results. The sugar had the