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Hi. I am doing the science fair project from Science Buddies: Crime Scene Chemistry: Determine the Identity of an Unknown Chemical Substance. I am having difficulty determining the Independent Variable and Dependent Variable for this experiment. I am currently completing an Experimental Design Diagram and need assistance in finding these variables. My parents ordered the kit and it arrived yesterday, but I need to identify the variables first. IT IS DUE TOMORROW 9/18/13.
I live in the mountain time zone. Can I have help quickly?
Thanks!!
7th Grader at Arizona College Prep
DUE 9/18/13 Forensic Toxicology Project
Moderators: AmyCowen, kgudger, bfinio, MadelineB, Moderators
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- Posts: 1
- Joined: Tue Sep 17, 2013 8:53 am
- Occupation: Student: 7th grade
- Project Question: I am doing the project from Sciencebuddies.com about crime scene science where the elderly woman accidentally puts Aspirin into her cookies and has to go the ER. I do not understand what the variables are in this experiment. I have to write a design diagram identifying the Independent and Dependent vairiables. Can I get help with this?
- Project Due Date: The experiment design diagram is due 9/18/13. I live in Arizona, which is on Mountain time.
- Project Status: I am conducting my research
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SciB
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- Occupation: Retired molecular biologist, university researcher and teacher
- Project Question: I wish to join Scibuddies to be able to help students achieve the best science project possible and to understand the science behind it.
- Project Due Date: n/a
- Project Status: Not applicable
Re: DUE 9/18/13 Forensic Toxicology Project
Hi,
I read the Methods for the forensic chemistry project and what you are doing is performing three tests on each unknown substance and comparing the results to aspirin. An independent variable is what you do to a sample--adding the test chemicals in this case--and the dependent variable is the result. These tests are called qualitative because you are not actually measuring the result quantitatively. Either the test is positive or it is negative.
Here's the link to the description of variables in an experiment: https://www.sciencebuddies.org/science- ... bles.shtml
If you have any more questions, please repost and i will try to help you before you have to turn in the project.
Good luck!
SciB
I read the Methods for the forensic chemistry project and what you are doing is performing three tests on each unknown substance and comparing the results to aspirin. An independent variable is what you do to a sample--adding the test chemicals in this case--and the dependent variable is the result. These tests are called qualitative because you are not actually measuring the result quantitatively. Either the test is positive or it is negative.
Here's the link to the description of variables in an experiment: https://www.sciencebuddies.org/science- ... bles.shtml
If you have any more questions, please repost and i will try to help you before you have to turn in the project.
Good luck!
SciB