Research Question: Which salt solution caused the sailor to die? Hypothesis: If the sailor drank the 40% salt water solution, then would die sooner, because the high amount of salt causes more dehydration. Variables: Independent- Salt Solution Dependent- Mass of Potato Control- Tap Water Materials: Tap Water (50 ml for each cup) salt Beaker 3 cups 3 pieces of potato Scale Procedure: Step 1: Gather Materials. Step 2: Weigh each potato separately on the scale and record weight in grams on table. Step 3: Put each potato in a separate cup and add 50 ml of water to each cup, assure with beaker.
Step 4: To create the 40% salt solution add 20 grams of salt to one cup. Measure the salt using the scale. Step 5: Add 0. 2 grams of salt to the second cup. This is for the 0. 4% salt water solution. Step 6: Leave cups to sit. Check on them next class and record observations. Sample Initial Mass (g) Day 1 Final Mass
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