Asked by Jakey

Which of the following events are not examples of a chemical reaction?

atoms of gold turning into atoms of iron

conversion of methane, which contains carbon and hydrogen, and oxygen into carbon dioxide and water <<<?

the rusting of iron in a humid atmosphere

decomposition of water into hydrogen and oxygen gases
Answered by DrBob222
All of the examples given are examples of a chemical change. Methane contains carbon and hydrogen but no oxygen.
Answered by jakey
ththe rusting of iron in a humid atmosphere

decomposition of water into hydrogen and oxygen gases
Answered by jakey
I thought those two are also chemical?
Answered by DrBob222
What part of ALL did you not understand? All four examples you listed are examples of a chemical change. The question, as stated, has no correct answer listed.
Answered by jakey
Thats why i need help with this problem.
the only choices i have is these four.

atoms of gold turning into atoms of iron

conversion of methane, which contains carbon and hydrogen, and oxygen into
carbon dioxide and water

the rusting of iron in a humid atmosphere

decomposition of water into hydrogen and oxygen gases

Answered by DrBob222
The correct answer is "none of these".
Answered by Katie
The correct answer is "atoms of gold turning into atoms of iron"
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