Testing Foods

Question 1

What chemical is used to test for starch?

Answer 1

iodine

Question 2

How do you test for starch?

Answer 2

1. add chemical

2. look for colour change

Question 3

What results will you get if there is starch?

Answer 3

Blue or black

Question 4

What chemical is used to test for protein?

Answer 4

Biuret’s solution

Question 5

How do you test for protein?

Answer 5

1. add chemical

2. look for colour change

Question 6

What results will you get if there is protein?

Answer 6

Purple

Question 7

What chemical is sued to test for reducing sugars?

Answer 7

Benedict’s soloution

Question 8

How do you test for reducing sugars?

Answer 8

1. add chemical
2. heat for 2 mins in water bath a boiling point
3. look for colour change

Question 9

What results will you get if there is reducing sugars?

Answer 9

Brick red - reducing sugars

Yellow / Green / Orange -less sugar

Question 10

What chemical is used to test for lipids?

Answer 10

Ethanol

Question 11

How do you test for lipids?

Answer 11

1. add chemical
2. shake thoroughly
3. add water
4. look for colour change

Question 12

What results will you get if there is lipids?

Answer 12

Cloudy / milky

Question 13

What process is used to measure the amount of energy in food?

Answer 13

Calorimeter

Question 14

What equipment is used for calorimeter?

Answer 14

• thermometer
• calriometer
• stirrer
• water
• clamp
• Bunsen burner