I did a science experiment about aquatic plants and now I have to write an introduction and I need help.?

Question

The point of the experiment was to determine what effect the plant (elodea) had on CO2 levels. In the experiment I got three test tubes. I filled each of them with BTB solution, which was an indicator to tell me how much carbon dioxide was left in the test tubes. The way that I know how much carbon dioxide is left is by looking at the color. Yellow meant it was rich in CO2 and Blue meant it was rich in O2. So then I added the plant to two of the test tubes, and the third one was left alone. Then i covered one of the plants with aluminum foil and I put all the test tubes in front of an open window. After an hour, I checked the test tubes. The one that didn't have a plant was blue. The one that was wrapped in foil was yellow and the one thatw wasn't wrapped was green-blue. all I know is that the one in the foil was the richest in CO2. But I don't understand why. I thought plants even water plants needed light to do photosynthesis. Now I have to write an introduction, including...

background information about the plant and BTB liquid. But I am sooo confused. Can anyone tell me why I got the results I got? Thanks =D And sorry this is so long.

Answer 1

yea your results are pretty messed up, but thats ok..that just means you have LOTS to talk about in your discussion
when my experiments mess up then my discussion is just packed of so much information, so dont worry about the results, they are meaningless to the actual point of carrying out the lab...just say youre a better scientist for obtaining the results you did because it makes you go through the process of photosynthesis in that much more detail to determined what happened, blah blah blah..teachers love that kinda stuff
as for the introduction, start off by saying a general form of what the experiment was about, in like a sentence or two...then begin with the most general information about elodea (you can even go into to why the CO2 levels should decrease and O2 levels increase, by way of the electron transport chain) state the scientific binomial name for elodea, where it lives etc etc..then get into the BTB solution, what it does, why youre usiing that as an indicator...do your reseach, use references
then at the end give a good clear objective/purpose of the lab...this is called the funnel method of the intro, it is not the only way of doing it..but i think its the best

Answer 2

I don't want to actually write it for you, because that would be cheating. But, I will tell you what to put into it.

An introduction sentance always states what you are asking, doing, or what you will be talking about. So what is your question?

Say it was: Can solar energy be used to cook food?

An Introduction sentance would be:I performed a Science Experiment to see if I could use Solar Energy to Cook Food.

Next, you are going to write about something that has to do with your topic. For example: for this experiment, I decided to use a Solar Oven, and test if they really work.

Then describe how you are going to do that. State the materials you'll need and at what time an day you will perform the experiment.

Then put a conclusion, which simply states the topic over again, but with In conclusion, or As you see, or ending like that.

I hope this has helped you!

-Science Tigger

Answer 3

First you write the definition of aquatic palnts.
......Then the characteristic of the plant about which you had performed the experiment and which collectively is"the effect of aquatic plants on CO2 level." Then explain paricularly the effect of elodea. all the terms in the experiment like photosynthesis etc.
then start your experiment.
.......Then you first wite the heading of eqiupments required
and then
experiment.
after that The results of your experiment.

Answer 4

You need to talk about the different plant types and the environments that they are found in. Make sure to cover a broad range. That gets extra points. Trust me, I am in advanced biology!