Experiment 1 - Water Salinity and Floating Eggs

• 1). Mix 1 cup of salt with 1 quart of water in the quart container.
  
  
• 2). Allow the eggs to reach room temperature.
  
  
• 3). Label the cups 1 to 5. Fill cup 1 three-fourths full with the salt water solution.
  
  
• 4). Add 6 oz. of tap water to each of the other cups.
  
  
• 5). Add 6 oz. of the salt water solution from cup 1 to cup 2 and stir.
  
  
• 6). Pour 6 oz. of the contents of cup 2 into cup 3. Stir the contents.
  
  
• 7). Pour 6 oz. of the mixture from cup 3 into cup 4 and stir.
  
  
• 8). Figure out the salt concentration of each cup and write it in your lab notebook.
  
  
• 9). Hypothesize which concentrations will allow an egg to float.
  
  
• 10
  
  Using a spoon to transfer, place an egg in each of the cups.
  
  
• 11
  
  Note in which solutions the eggs float and any differences in floating characteristics.
  
  
• 12
  
  Document the minimum amount of salt concentration needed to make an egg float.
  
  

Experiment 2- Strength of Eggshell Arches

• 1). Use a metal skewer or other object to make a small hole on the pointy end of each egg. Let the contents of the egg drain into the bowl. Empty all eggshells completely.
  
  
• 2). Cut the eggshells in half at their widest point. Use a file to score the middle, and break the top half of the shell off by hand.
  
  
• 3). Arrange three eggshells in an equilateral triangle on a flat surface with their open ends face-down.
  
  
• 4). Gently lay the phone book atop the three shells. Add magazines one at a time until the shells break. Weigh the phone book and magazines that the shells held before breaking.
  
  
• 5). Repeat with three more eggshells three more times. Calculate the mean weight supported by the eggshells.
  
  

Experiment 3 -- Egg in a Bottle

• 1). Remove the shell from the hard-boiled egg.
  
  
• 2). Put an egg on top of a jar with a narrow opening. The egg should sit in the opening but not fall through.
  
  
• 3). Remove the egg and drop two lit matches inside the jar.
  
  
• 4). Place the egg back on the mouth of the jar.
  
  
• 5). Observe the egg's behavior. It should fall through the opening. Explain why the egg falls through.