Do certain types of food contain specific substances?
Sucrose and glucose are both types of sugar. Sugars are types of carbohydrate. Starch is also a type of carbohydrate. However, starch is not a type of sugar. Information like this can be shown on a Venn diagram.
Recording your results
1 Draw a table to show which of the foods you tested contain which of the food substances that you tested for. Considering your results/conclusions
2 Draw a Venn diagram to show which foods contained which food substances. Your diagram might be based on this one.
3 Which food or foods contained the widest variety of different food substances?
Evaluation
4 Try to find nutrition information for two or three of the foods that you tested.
a How well does the nutrition information match your results for each food?
b Why do you think there may be differences between what is actually in the food and what your tests show?