Answer:
Step-by-step explanation:
Gold cannot be broken down by any physical or chemical methods, because it is an element. It has properties of an element not a compound nor mixture.
Gold is a chemical element with the symbol Au and atomic number 79.
Gold
Explanation:
We cannot break down elements by a chemical change.
Gold is the only element in the list
Butanal, propene, and water are wrong. They are compounds, so they can be broken down into their elements.
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