Arkansas State Barber Practice Exam

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An example of a chemical compound is:

Iron
Helium
Water
Gold

The correct answer is: Water

A chemical compound is a substance that is composed of two or more elements chemically bonded together in a specific ratio. Iron, helium, and gold are all elements, which means they consist of only one type of atom and cannot be broken down into simpler substances. Water, on the other hand, is made up of two hydrogen atoms and one oxygen atom, bonded together to form a compound. This makes water the only correct answer as it fits the definition of a chemical compound.