Tests For Molecules

Question 1

Test for proteins

Answer 1

The Biurette reagent made of sodium hydroxide and copper (II)
Once added to the solution, it will turn violet if protein is present

Question 2

Test for starch

Answer 2

Add iodine to the solution, and if starch amylose is present, then it will turn blue-black

Question 3

Test for Glucose

Answer 3

Add benedicts solution to solution and heat in a water bath. If glucose is present, it will turn brick red

Question 4

Test for lipids

Answer 4

Lipid emulsion test

Add alcahol to solution, and the alcahol will dissolve any lipids in the solution. Add water witch will break down the alcahol and lipids were present a white emulsion will appear