Test 2 Flashcards
Rate of reaction = ??
What do catalysts do
They increase the rate of chemical reactions by decreasing the energy required to start the reaction.
What does Benedict’s test for
Glucose (a simple sugar)
What does buiret test for
Protein
What does ethanol test for
Lipid
What does iodine test for
Starch (a complex carbohydrate)
Test for starch
Positive result = iodine turns from yellow/orange to blue black
Test for sugars
Positive result = Benedicts solution turns from blue to brick red on heating
Test for carbohydrates
Iodine solution = turns blue/black if starch is present
Benedicts reagent = turns from brick red on heating if sugars are present
Test for protein
Biuret reagent turns from blue to purple in presents of protein
Test for lipids
Ethanol = add to solution, a cloudy white precipitate is formed in the presents of lipids
