Lab Report

Here's what you do:

1. Obtain an uncooked egg. Measure the distance around the middle in millimeters - try putting a string around it and marking the distance. Then put the string up to a ruler with millimeters. (Alternately, you could weight the egg instead of measuring its diameter.) Record your observations.

2. Put the egg in a cup, jar, or glass and cover it with vinegar. Wash your hands! Cover the container with plastic wrap and place in your refrigerator - maybe toward the back so it won’t get knocked over.  Let sit for 4 days. During that time, check on the egg’s progress. Make daily observations, using all of your senses.

3. On day 4, gently take the egg out of the container. The shell should be soft by now. Very carefully, rinse the shell off the egg. Measure again. Record your observations. Rinse the container out and place the egg back in it. Put enough syrup (corn syrup, pancake syrup, or water with a lot of sugar to cover the egg - although it will probably float. That’s OK. Recover and place back in your refrigerator for 1 day. Wash your hands!

4. The next day, take the egg out of the syrup, rinse, and measure again. Record your observations. Rinse out the container again and place the egg back in it. Fill the container with enough water to cover the egg - although it might float - and place back in the refrigerator for 1 day. Wash your hands!

5. The next day, take the egg out of the container, and measure one last time. Record your observations. Get rid of that egg! Be sure to wash your hands!

6. Be sure to include a day-by-day set of observations in your lab report. What are your conclusions? Be sure to use the terms hypotonic and hypertonic in your conclusions and explain how they apply to your results. Provide a lot of details!

Be sure to include daily observations.