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Materials:
Food labels
Magnifying glass or eye glasses (if necessary)
Procedure:
1. Look for ten (10) food labels that you can find at home (ex. cereal drink, chocolate candy, soy sauce, etc.)
2. You may also find product labels other than food such as medicine, household
cleaning products, cosmetics, and toiletries.
3. List down in the table below, the compounds in the product label and the constituent
elements. There are cases that you will need to look up the constituent elements
because they may not be obvious from the compound name (e.g., citric acid, oil).
Write its uses.Use(s)/Function
4. Careful in handling corrosive substances. Use gloves or wash your hands after holding it.
Compounds and their constituent elements written in the food labels
Food Product
Compound
Constituent Element
Use(s)/Function
Ex. Cereal drink
Iron pyrophosphate
Iron, phosphorus, oxygen
Zinc sulfate
Zinc, sulfur, oxygen
What distinguishes compounds from elements? Applying, Synthesizing
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