Osmosis+by+Inquiry

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** STUDENT PROCEDURE: THIS OLD EGG **

Follow the instructions for each day carefully. Failure to do so may result in a botched laboratory #|exercise. You may work in groups of two or three for this activity. #|Day one, two, and three may be done at home by making appropriate modifications to the #|laboratory equipment (for example you may use cups instead of beakers). You may also find it helpful to download the file above for instructions on how to make appropriate concentrations of sugar water for the experiment. When it is time to make your own experiment, you may need to access some specific laboratory materials from the school. For those of you that make it to class for the duration of the laboratory need not do this experiment at home, although your family members might enjoy it! I know mine did. As a member of this Wikispace you will make edits to the following tables to collect and report your data. You may work collaboratively with your group members via Google docs to save and make edits to your lab report. Enjoy the lab!

1) Label 2 beakers (or cups) with your name, period, and date 2) Pour 200mL of vinegar into each beaker 3) GENTLY add 1 egg to each beaker 4) Record observations in data table and answer the questions 5) Place the beakers in a safe location and let sit overnight
 * Day 1 **


 * || **Observations** || **Are there bubbles forming?** || **What are the bubbles from?** ||
 * **DAY 1** ||  ||   ||   ||

1) Record observations and answer the questions 2) Gently remove each egg and rinse under the tap 3) Determine the mass by using a balance 4) Record #|weights in you data table 5) Put 200 mL of #|distilled water in beaker one and add a de-shelled egg 6) Put 200 mL of 70% sugar water in beaker two and add a de-shelled egg 7) Record observations 8) Predict what you think will happen to each egg 9) Let sit overnight
 * Day 2 **


 * |||| **Observations** |||| **Where did the shell go?** || **Why is the egg soft?** ||
 * **DAY 2** ||||  ||||   ||   ||
 * ^  |||| **Record the mass** ||||^   ||^   ||
 * ^  || **Egg 1** || **Egg 2** ||||^   ||^   ||
 * |||||| **Predict what will happen to the egg in the #|distilled water (egg 1).** |||| **Predict what will happen to the egg in the 70% sugar water (egg 2).** ||
 * **Day 2** ||||||  ||||   ||
 * **Day 2** ||||||  ||||   ||

1) Remove eggs from beakers 2) Pat dry and determine the mass, record the mass in the data section 3) Address the questions that follow 4) Develop a hypothesis that explains one of your observations 5) Develop an experiment to test your hypothesis
 * --Day 3-- **


 * |||| **Observations** || **Describe what happened to the egg in the distilled water (egg 1).** || **Describe what happened to the egg in the 70% sugar water (egg 2).** ||
 * **Day 3** ||||  ||   ||   ||
 * ^  |||| **Record the mass** ||^   ||^   ||
 * ^  || **Egg 1** || **Egg 2** ||^   ||^   ||
 * ^  |||||||| **Write a hypothesis that explains one of your observations about egg 1 or egg 2.** ||
 * ^  |||||||| **Develop an experiment to test your hypothesis. Write your procedure below.** ||
 * ^  |||||||| **Develop an experiment to test your hypothesis. Write your procedure below.** ||
 * ^  |||||||| **Develop an experiment to test your hypothesis. Write your procedure below.** ||

6) The teacher must review your experiment and sign here__ before you may proceed. 7) Perform experiment 8) Record observations 9) Write conclusion


 * **Student Experiment** || **Observations and Notes** ||
 * ^  || **Conclusion** ||
 * ^  || **Conclusion** ||