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