Egg-Speriment Written Report

Due Friday, October14, 2016

This report needs to be typed, including the data table; however, the graph may be done on the computer or neatly created on graph paper in pen. Use 12 point font and 1.5 spacing. You should bold your section titles and they need to be in the same order as this handout. A cover page is not required.

  1. Introduction (10 points)

A. Paragraph 1:Describe the purpose of this lab. Why are you doing this lab? In particular, you are trying to determine the relationship between (independent variable) and (dependent variable) when testing (subject).

B. Paragraph 2: Introduce important vocabulary and the definitions to give a context to this lab. Include words such as osmosis, diffusion, equilibrium, cell membrane as well as any other vocabulary words you think might be necessary. Write your vocabulary in paragraph form.

C. Paragraph 3: Give a brief summary of the lab. Be sure to say what the independent and dependent variables are as well as saying how they will be measured (including units!). Also talk about factors that need to remain constant (min 3). Do not talk about your results yet.

  1. Paragraph 4: Describe your hypotheses (Hint: There will be 4 hypotheses (one for each liquid: vinegar, syrup, water, whatever you choose as the liquid of choice). Use the format we practiced in class.)
  1. Materials and Methods (10 points)
  2. Materials
  3. Make an exact list of the amount and type of materials needed.
  4. Do not number the list. Use bullets instead.
  5. Do not use the term “liquid of choice” at all in your report. Simply say whatever liquid you used.
  6. Make your list in 2 columns.
  7. Methods
  8. Record the list of procedures that you followed. This should be a numbered list. Another person should be able to copy the procedure exactly after reading this section.
  9. You do not need to say “Gather your materials,” or “Make a data table.”
  10. If you will be repeating similar steps, you can say “repeat steps x through y”
  11. Do clearly explain how and when any measurements will be taken.
  1. Data Collection (10 points)

Organize your data into a table(s). Display your quantitative and qualitative observations in a way that best summarizes and explains the work.

  1. Analysis of Data (10 points)
  2. Graph
  3. Make a line graph of your data, with 1 line for each egg.
  4. Show the changes in your egg’s circumference in mm.
  5. Put the independent variable on the x-axis and the dependent variable on the y-axis.
  6. Label each axis and include a descriptive title.Don’t forget a key!
  7. Osmosis Diagrams
  8. Create 4 osmosis diagrams showing the movement of molecules at each stage.
  9. You need a diagram labeled with the stage and explain what happened. H= Higher concentration and L=Lower concentration.
  10. Example:

Stage: Liquid of choice

Explanation: The egg had the higher concentration when first put into the

liquid of choice so the molecules moved out of the egg and it decreased in

size. (Note: Do not use the words “liquid of choice” in your report. Write about what you actually used, such as‘Listerine mouth wash.’)

  1. Results and Discussion (15 points)
  2. Interpretation of your data – Write one paragraph for each liquid you used. Describe your findings in the order you used each liquid.
  3. Were your hypotheses accepted or rejected? Explain for each one!
  4. Explain the meaning of your observations and numerical results. Why did this happen (for each liquid)?
  5. Support the meaning with the data collected. Use numbers…by how many mm did the egg increase or decrease in size?
  6. Were there any other observations you made that you can explain? For example, did your egg change color? Why?
  7. Use the vocabulary you introduced in the introduction.
  8. Discuss any patterns, or lack of them, found in your data. If you had a new liquid to try, could you predict whether the egg would increase or decrease in size?
  9. What were the possible sources of error? Explain. (Every lab has sources of error!)
  10. Do you have any suggestions for a follow-up experiment or improvements to your experiment? (I am sure you do )
  1. Presentation(Organization) (5 points)
  2. Neatness counts!
  3. Be sure not to use the word “I” in your report.
  4. Use a ruler and graph paper for your graph or complete them on the computer.
  5. Label section headings in your report. Use the same headings and order above.
  6. Spell check and proof read your report.
  1. Oral Presentation (10 points)
  2. Communicate effectively.
  3. Bring one of your eggs that has survived to class in two Ziplock baggies.
  4. Be prepared to present the following information to the class:
  5. Your liquid of choice.
  6. Why you chose it.
  7. What you thought would happen.
  8. What actually happened.