Food Tests

Question 1

How do you test for starch

Answer 1

1. Add a few drops of iodine solution to the food

2. If the solution turns dark blue, the food contains starch

Question 2

How do you test for lipids?

Answer 2

1. Rub some the food onto a piece of filter paper.

2. Hold the paper up to a light and if it goes translucent, it contains lipids

Question 3

How do you test for sugar?

Answer 3

1. Add a few drops of Benedict’s solution to the food solution
2. Heat the test tube in a water bath
3. If the tube turns orange-red, the food contains sugar

Question 4

How do you test for protein?

Answer 4

1. Add a few drops of copper sulfate solution to your food
2. Add a few drops of sodium hydroxide solution
3. If the solution turns purple, the food contains protein