A food test shows if a specific type of food is present in a sample.

A reagent is a chemical used to test for a type of food.

A qualitative test is one that gives an indication of presence, but not an exact figure.

A quantitative test is one that gives a measurable, numerical, value.

Food tests: practical

Science

Pupils will learn how cells use sugar from digested food as a source of energy.

Pupils learned that particles of substances move within, into and out of cells by diffusion.

Human digestive system

Physical activity and equipment requiring safe use

A test that shows if a specific type of food is present in a sample.

A test that shows if the food contains additives.

the iodine will turn blue/black in colour.

the iodine will stay red/brown in colour.

the Benedict's solution will change colour.

Grind the food into small pieces using a pestle and mortar.

Add a few drops of distilled water to the sample to create a suspension.

Transfer the suspension into a boiling tube.

Add an equal volume of Benedict’s solution to the boiling tube.

Mix thoroughly and place in a warm water bath, leave for 5 min.

Put the method for testing if reducing sugars are present, in the right order.

Starting with the least, put these foods in order of the amount of reducing sugars they contain.

What does this result tell us about the food being tested?

Both iodine and Benedict’s solution give an indication of the presence or absence of a food, but not a quantitative result, we call this a {{}} result.

True or false? Food is broken down into nutrients by both mechanical and chemical digestion.

Match the food to the nutrient it is broken down into.

Which organ makes bile to help breakdown fats?

Put these in order to show the path of food through the body.

True of false? Enzymes are chemicals that are used up during the chemical breakdown of food.

Match the type of enzyme to the nutrient that is released.

Content guidance

Risk assessment required - equipment

Adult supervision required

This lesson will soon be taken down.

Food tests: practical

Lesson outcome

Content guidance