Food molecule tests

Question 1

What liquid do you use to test for starch?

Answer 1

Iodine (5 drops)

Question 2

Where do you put your samples when testing for starch?

Answer 2

Spotting tile

Question 3

What is the colour change of iodine in the test for starch?

Answer 3

Orange –> Blue Black

Question 4

What liquid is used to test for Glucose?

Answer 4

Benedict’s solution

Question 5

How many boiling tubes will you get in the test for Glucose?

Answer 5

5 (4 samples, 1 water)

Question 6

What do you heat you samples in?

Answer 6

Water bath (85 degrees)

Question 7

How long do you heat your samples for?

Answer 7

5 mins

Question 8

What’s the colour change in the test for Glucose?

Answer 8

Blue –> Brick red

Question 9

What liquid do I use to test for protein?

Answer 9

Biuret Solution

Question 10

How many boiling tubes do I get in the test for Protein?

Answer 10

5 (4 sample 1 water)

Question 11

What’s the colour change in the test for Protein?

Answer 11

Blue –> Purple

Question 12

What liquid do I use to test for fats?

Answer 12

Ethanol

Question 13

In each boiling tube what will you add in the test for fats?

Answer 13

Sample + 2cm3 Ethanol (mix) + Water

Question 14

What the colour change in the test for Fats?

Answer 14

Colourless –> Milky White