U2-3-1 - Carbohydrates

Question 1

Carbohydrates

Answer 1

Compounds that contain only C, H and O.

The H and O have a 2:1 ratio.

Question 2

Formula for glucose

Answer 2

C₆H₁₂O₆

Question 3

Chemical test for glucose

Answer 3

Benedict’s solution turns from blue to brick red (when heated with glucose).

Question 4

Chemical test for starch

Answer 4

Iodine turns from brown to blue/black