Food Tests Flashcards
What is a source of error that could be made when doing the food test practical?
getting the colour wrong
In the presence of starch what colour does iodine start at and what does it change to?
brown to blue-black
What is qualitative in the food tests?
colour change
What solution will you add to find sugar?
benedicts
What solutions will you add to find lipids?
distilled water and ethanol
What solution will you add to find protein?
buirets
What is the independent variable in the food tests practical?
food
What is the dependent variable in the food tests practical?
presence of carbohydrate/ lipid/ protein
What are the control variables for he food tests practical?
mass of food, volume or reagent, concentration of reagent
why is the food tests practical carried out?
to test for a range of carbohydrates, lipids and proteins
