Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

Option (C) is the correct answer.

Explanation:

A compound is a substance that contains two or more atoms chemically combined together in a fixed ratio by mass.

For example, carbon dioxide is a compound and its ratio by mass is 12:32 which is equal to 3:8.

Whereas when a substance with atoms of only a single element is known as a pure substance.

Therefore, we can conclude that the statement, a substance made of two oxygen atoms for each carbon atom describes a compound.

A

Explanation:

a compound is a pure substance and A tells that

c. a substance made of two o2 atoms for each carbon atom

i think...

Compound is defined as a pure substance which is made up of two or more different elements present in the fixed ratio and they can be separated into smaller substances by means of chemical processes.

Thus, a substance made up of two oxygen atoms for each carbon atom describes a compound as the substance is made up of two different elements which are present in the fixed ratio.

Hence, option c that is a substance made up of two oxygen atoms for each carbon atom describes a compound.

The answer is C.The valence of the atoms combine .