Lesson: The Chemistry of Food

Biology

In this lesson, we will learn how to carry out chemical tests on food for the presence of sugars, starch, protein and fats.

Worksheet

Q1:

A sample is tested with iodine. What is the color change that will occur if the sample contains starch?

Q2:

Complete the table to show the correct biological molecule being tested for, or the name of the test.

Molecule Being Tested for	Starch	2	Protein	4
Name of Reagent/Test	1	Ethanol/Emulsion test	3	Benedict’s solution

Q3:

A sample is tested using the emulsion test with ethanol. What will the result be if the sample contains lipids?

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