Question

Lab Report
Identifying Organic Compounds
http://k12.http.internapcdn.net/k12_vitalstream_com/CURRICULUM/325823/CURRENT_RELEASE/VHS_BIO_S1_02_08_Investigating_Bio_Compound.html

Answer 1

What do you wish we help you with?
I mean you want hints like for example like "try put some drops triiodide in a aqueous solution of starch"?

Answer 2

2. What was the role of the water test tube in each phase?

Answer 3

3. Describe a chemical indicator. What is it? What is it used for? How does it work?

Answer 4

the questions

Answer 5

2) in science we always want a reference (control experiment), otherwise we can not tell what may have happened. So to the example with triiodide. If you mix water and triiodide nothing happens (reference). If you mix triiodide and starch however the solution will turn purple/back indicating the presence of starch.
3) I kinda also answered that in 2) so try answer it your self.

Answer 6

thanks !