iGCSE Food Groups & Food Tests
What is the food test for glucose?
Benedict's solution and heat
What is the food test for protein?
Biuret test
Which types of food contain lots of vitamin D?
Egg yolks
carbohydrates
Which types of food group is contained in bread, rice, yam, pasta & potatoes?
What colour do you see in a negative Benedict's test
blue
What colour change do you see in a positive Starch test
blue black
Which types of food contain lots of vitamin A
carrots
Which types of food contain lots of vitamin C
citrus fruit
What solutions do you need for a Biuret test?
copper sulphate and sodium hydroxide
Which types of food contain lots of calcium for strong teeth and bones
dairy
What colour change do you see in a positive Benedict's test
green orange brick red
What is the food test for starch?
iodine solution
Which type of food group is contained in meat, cheese, butter, margarine & oils
lipids
What colour change do you see in a positive Biuret test
mauve
What colour change do you see in a negative Biuret test
pale blue
Which type of food group is contained in meat, fish, soya, tofu, peas & beans
protein
Which types of food contain lots of iron
red meat and spinach
Which disease is caused by not having enough vitamin C
scurvey
What colour change do you see in a negative starch test
stays yellow brown or honey
Why do we need to be very careful with sodium hydroxide?
strong alkaline damages skin
What does your skin need to make vitamin D
sunlight