Question

Which of the following can be broken into simpler substances:

- water
- gold
- iron sulphide
- sodium chloride

(Select all that apply)

Answer 1

Answer:

Water is a compound of two atoms of hydrogen and one atom of oxygen. All these compounds can be 'broken down' into 'simpler substances' except oxygen.

Explanation:

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Answer 2

Answer:

WATER CAN BE BROKEN DOWN TO HYDROGEN AND OXYGEN BY THE METHOD OF ELECTROLYSIS.

SODIUM CHLORIDE CAN ALSO BE BROKEN TO SODIUM AND CHLORINE .

Explanation: