practicals Flashcards
1
Q
what is used to test for starch
A
iodine
2
Q
what colour change is there when starch is present
A
orange to black
3
Q
what is the test for protein
A
biuret test
4
Q
what colourchange is there if protein is present
A
blue to purple
5
Q
what is the test for lipids
A
ethanol
6
Q
what change is there when lipids are present
A
when ethanol is added it forms a cloudy white layer
7
Q
what is the test for sugar
A
add benedict’s solution to sample and heat.
8
Q
what colour change is there when sugar is present
A
blue to green when not much sugar is present
blue to yellow/ red when lots of sugar is present
