Food Tests

Question 1

Step 1

Answer 1

Grind up (biscuit) sample in a pestle and mortar

Question 2

Step 2

Answer 2

Transfer the (biscuit) into an 100ml beaker

Question 3

Step 3

Answer 3

Add a reasonable amount of distilled water

Question 4

Step 4

Answer 4

Stir it together to dissolve the chemicals into the water

Question 5

Step 5

Answer 5

While its dissolving prepare a conical flask with a filter and a funnel

Question 6

Step 6

Answer 6

Filter the food through the conical flask to help see a colour change

Question 7

What tests glucose?

Answer 7

Benedicts solution

Question 8

What colour is benedicts solution.

Answer 8

Blue

Question 9

Do you heat the benedicts solution in the sample?

Answer 9

Yes

Question 10

What tests for starch?

Answer 10

Iodine

Question 11

What colour is iodine?

Answer 11

Orange

Question 12

What tests for lipids/fats?

Answer 12

Ethanol

Question 13

What tests for proteins?

Answer 13

Biuret reagent

Question 14

What colour is buiret solution?

Answer 14

Light blue

Question 15

What colour means glucose is present?

Answer 15

Green/yellow/orange/brick red

Question 16

What colour means starch is present?

Answer 16

Blue/black

Question 17

What colour means fats/lipids are present?

Answer 17

Milky/cloudy white

Question 18

What colour is ethanol?

Answer 18

Clear

Question 19

What colour means protein is present?

Answer 19

Pink/purple