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kondaur [170]
3 years ago
5

Which of the following is a mixture?

Chemistry
2 answers:
levacccp [35]3 years ago
5 0
D. Sand.

Sand is a mixture of small particles of rocks or minerals.
juin [17]3 years ago
5 0

<u>Answer:</u> The correct answer is Option D.

<u>Explanation:</u>

Mixture is defined as the combination of two or more different pure substances where each pure substance retains its original chemical properties.

A pure substances is defined as the substance that is formed by the combination of only one type of atom or only one type of molecule. The atoms or molecules forming a pure substance loose their original chemical properties.

From the given options:

<u>Option A:</u> carbon dioxide

Carbon dioxide is the combination of carbon and oxygen atom. This compound contains the molecules of carbon dioxide only. Thus, it is a pure substance.

<u>Option B:</u> silicon

Silicon element is formed by the combination of silicon atoms only. Thus, it is a pure substance.

<u>Option C:</u> Silicon dioxide

Silicon dioxide is the combination of silicon and oxygen atom. This compound contains the molecules of silicon dioxide only. Thus, it is a pure substance.

<u>Option D:</u> Sand

Sand is the mixture of silicon dioxide (known as quartz) with some rocks and minerals. Every substance retains its own chemical properties. Thus, it is a mixture.

From the above information, the correct answer is option D.

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