Science Buddies: "Ask an Expert"

hey, my project is The Effect of Artificial Sweeteners on Yeast Reproduction. The levels of my IV were 4 tbsp. of Pure Cane Sugar (C), 1 tbsp. of Splenda brand sweetener (sucralose), 1 tbsp. of Equal brand sweetener (saccharin), and 1 tbsp. of Aspartame sweetener. The amounts vary because it takes 4 tbsp. of sugar to equal the sweetening power of 1 tbsp. of Artificial Sweetener. My question is about further analyzing my data. I have 2 graphs, my formal data table, and my summary data table of the Independent Variables. I was wondering if there is any way that I could further analyze my data, to improve my project.

I was also wondering if you knew the chemical formulas for Sucralose and Saccharin, because I was not able to find a credible source for that information. (I have Googled it, Asked Jeeves, and even went to my dad )

Thank You Very Much!

Hey Erika. I have no idea what the answer is. Its Charlotte. Just saying hi and getting you all excited about a reply when its only me. TTYL!

Check out the following websites for chemical formulas:

http://web1.caryacademy.org/chemistry/r ... /Index.htm

http://www.rosalindfranklin.edu/cms/bio ... harin.html

http://apps3.fao.org/jecfa/additive_spe ... e-0546.htm

http://sci-toys.com/ingredients/sucralose.html

Hope these help.

Mary

Hi Erika,

If you have made graphs showing the relationship between your independent and dependent variables, then your data analysis is probably complete. Your graphs should include a title and a description on both the x-axis and y-axis. You should go back and read the rules for your science fair and make sure you have included all of the required sections in your project. Judging is usually done on a point system, and you will lose points if an entire section is missing. One common mistake is not including a bibliography. You should make sure that your conclusion is related to the hypothesis and supported by the results. Don't just say, for example, "my hypothesis was correct." Go ahead and explain why your results do/do not support the hypothesis. Include a suggestion of what you would do differently if you were to repeat the experiment.

If there is a problem with your data and you are having a hard time making a conclusion, then let us know what your results were and we'll give you more suggestions. This sounds like it was a well designed project, and I suspect your results were clear.

Donna Hardy

From Donna Hardy

Hi Erika,

Here is the structure of the sweeteners you used in your project.

https://www.sciencebuddies.org/mentorin ... teners.pdf

Have you taken chemistry? If so, then look at the structure and see if you can figure out why each molecule is sweet. In your data analysis and conclusion, see if you can relate the results to the chemical structure. I would recommend using the structures of the various molecules on your
presentation board.

Donna Hardy

Hi Erika,

I agree with Donna. It sounds like you've done a complete analysis of your data. However, if you're not sure, you may want to post what type of analysis you conducted. In other words, what is the data on your graph? What is your x-axis and your y-axis?

Congrats on completing your project! If you need any more clarifications, please post again.

Best of luck,
Linh