Ben Ennassime
December 1, 2014
Mr. George
Chemistry
Science fair research paper
In the project about electric currents traveling through water of different salinities there are many variables that have scientific correlation for example due to the research a reasonable hypothesis would be that the more salinity in the water, the more electric travel there will be. This is due to the extra conductivity the sodium gives the the water allowing the current to travel through the water from one electrode to the other more effectively as the salinity rises. In the research conducted it was found that pure water is a poor conductor because it lacks ions while the ion NaCl can be found in salt water which allows the charge and electrical power of the water to increase because the charge transfers along the ions. This basically supports that as the salt amount is increased in the water then the water will conduct electricity better. The other research conducted shows that the conductivity of the water rises as the temperature does. This then proves why the constant is the climate and temperature that the water and the environment is in. Another important thing to go by is the fact that it is required to monitor the electric reading and write them down from the electrometer and ammeter. These results should be accurate given that two different monitors are used to read the currents in two different ways. This allows for the most accurate data to be collected and will make plentiful data for the given experiment. Another issue faced was determining the controlled variable. In this case it was decided to make full on salt water the controlled variable compared to the pure water and the water of differing salinities. This was because of the salt water according to the research should be the most conductive because it has the greatest salinity and should conduct electricity the best due to all the ions it has. In this case this leads to a hypothesis that as the salinity of the water increases there will be a increase in the electro conductivity of the water and in all hopefulness the experimental tests should support this prediction. In later research it was also learned that the test would require the same exact amount of water for every test. This is because if water was increased then there would be a differing gap of salt to water ratio