Food tests

Question 1

Starch food test instructions and colour change if a positive result and substances present

Answer 1

Add iodine solution to the sample if starch is present it goes from brown to blue/black. Cho - Carbon Hydrogen Oxygen

Question 2

Reducing sugar food test instrouctions and colour change if it is present. What it is made out of

Answer 2

add benedicts solution to the sample and heat then above 70 degrees. it will turn from light blue to red (yellow/green/orange). Cho - carbon hydrogen oxygen

Question 3

fats food test intstrouctions and colour change if present ad substances its made from

Answer 3

add ethanol to the sample and then add water and mix. forms a white emulsionand cho - carbon hydrogen oxygen

Question 4

protien food test instrouctions and colour change if present and substance made out of

Answer 4

add biuret solution to the sample from light blue to purple Chon - carbon hydrogen oxygen nitrogen