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VashaNatasha [74]
3 years ago
12

When a sample of rust was mixed with acid, the rust changed into two simpler substances: W and Z. The substances W and Z could n

ot be broken down into simpler substances. A. The substances W and Z are compounds. B. Rust is a compound made of two elements. C. The substances W and Z are not made of atoms. D. Rust is an element that breaks into compounds.
Chemistry
1 answer:
nasty-shy [4]3 years ago
7 0

Answer:

B. Rust is a compound made of two elements.

Explanation:

A substance is a form of matter which has a constant composition and distinct properties. Depending on whether they can be separated by chemical means or not, they can be compounds or elements, respectively.

The problem tells us that a sample of <u>rust, after a chemical reaction with acid, is separated into two simpler substances</u> W and Z. Therefore, <u>the rust is a compound.</u>

After obtaining W and Z, these substances can not be broken down into simpler substances. Therefore, <u>these substances are elements.</u>

Rust is a compound made of two elements, iron and oxygen.

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