RS+SF

Abstract: This project is about how quickly different liquids evaporate. 4 different liquids were tested in this experiment in the same environment. In the experiment, cups and bowls of all the different liquids were set out to evaporate. Every cup/bowl was started with exactly 20 ml. Every set of trials was left out for 5 days. Each liquid was poured into a measuring cup and then measured with a graduated cylinder. This was done after 1 day of sitting out, 3 days, and 5 days for each trial. After all the trials were done, the data recorded was averaged to see which had the lowest average after 5 days of evaporating. The hypothesis was correct because the water bowl average was the lowest after 5 days of evaporation. However, the graph shows that the Mountain Dew in bowls, on average evaporated the most up until about day 4. This is may be because Mountain Dew was the only carbonated liquid, so it evaporated more quickly in the beginning of the trials.
 * 1) =**Title: Liquid Evaporation**=
 * 2) Problem: Which liquid will evaporate the most after 5 of days?
 * 3) Hypothesis: If water, saltwater, Mountain Dew, and Gatorade are set out in the same environment in bowls and cups, then water in a bowl will evaporate the most after 5 days.
 * 4) Procedure:
 * 5) Set out four cups and four bowls on a table.
 * 6) Measure 20 ml of each liquid with a graduated cylinder.
 * 7) Pour each type of liquid into both types of containers.
 * 8) After one day, measure each liquid again and record changes in a data table.
 * 9) Observe again after 3 days and 5 days and record changes in data table.
 * 10) Repeat this process ten times.
 * 11) Observe which liquid consistently evaporates the most after 5 days.
 * 12) Materials:
 * 4 identical plastic cups
 * 4 identical styrofoam bowls
 * 10 ml graduated cylinder
 * Bottled water
 * Table salt (NaCl)
 * Gatorade
 * Mountain Dew
 * 250 ml measuring cup
 * 1/8 Tsp. measuring spoon

Discussion: This experiment showed that liquids can evaporate quite a lot over a few days. Even though they were small amounts to start out with (20 ml) it still showed a very significant decrease. Over the course of 5 days the liquids evaporated at different rates. Some liquids' averages were very close after 5 days of sitting out and evaporating. The liquids that were tested are, water, saltwater, Mountain Dew, and Gatorade. The different liquids were measured to 20 ml and poured into cups and bowls. For each trial, there was 1 cup and 1 bowl of each of the 4 liquids. The first set of trials was 2 trials, the next 2 sets of trials were 3 trials, and the final set of trials was 2 trials. Each trial was measured after 1 day, 3 days and 5 days. Then the averages were calculated. The graph of the averages shows that saltwater in cups and bowls evaporated the least after 5 days, on average. The Mountain Dew in bowls evaporated the most on average untill the final measurment. The same thing was true with Gatorade in cups untill after 3 days. but, as the hypothesis stated, the water in bowls evaporated the most on average after 5 days of sitting out. The water in cups also evaporated more on average than all the other liquids in cups. The water was expected to evaporate more than the other liquids because it is the simplest liquid.

The major error in this experiment could have been exact measuring. It is hard to measure perfectly every single time the liquids needed to be measured. Also, some of the liquids solidified after the 5th day because of the sugars in them,making it impossible to measure which may have skewed the data. This experiment could have been improved. One way it could have been improved is that the temperature could have been measured and regulated, because temperature affects the rate of evaporation. Another way this could have been improved is that the liquids could have been checked and measured every day. Also, all of the trials should have been done at the same time, or at least in the same month because of the difference in temperature and humidity.

Application: