SB1f: Teasting Foods Keywords

Question 1

Benedict’s solution

Answer 1

A bright blue chemical reagent that turns orange or red when warmed with a solution of reducing sugars.

Question 2

Biuret test

Answer 2

A test that uses copper sulfate solution and potassium hydroxide solution to test for proteins. The blue of the copper sulfate solution turns purple in the presence of proteins.

Question 3

Calorimeter

Answer 3

Equipment used to measure the energy released from a substance by burning it.

Question 4

Chemical reagent

Answer 4

A substance or mixture used in chemical analysis or reactions.

Question 5

Iodine solution

Answer 5

A yellow-orange solution that turns black-blue when in contact with starch.

Question 6

Precipitate

Answer 6

Insoluble substance formed when two soluble substances react together.

Question 7

Reducing sugar

Answer 7

A simple sugar, such as glucose or fructose, that reacts with (reduces) Benedict’s solution and changes its colour.