Answered

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2. Rust forming on a piece of iron is an example of which of the following:
A. A physical change because the process can be reversed
B.
A chemical change because oxygen atoms from the atmosphere bonded with the iron atoms
C.
A violation of the laws of physics because new mass has been created

Sagot :

12651241

Answer:

B.

Explanation:

Rust is a chemical change because you can not undo it. Rusting of iron is a chemical change because a new substance iron oxide is formed. The presence of oxygen and water or water vapour is essential for rusting.

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