Concept explainers
Interpretation:
Whether carbon dioxide gas is a pure substance or not should be explained.
Concept introduction:
A pure substance is defined as when the arrangement of an atom is in a constant manner and they cannot be differentiated into other substances.

Answer to Problem 32A
Carbon dioxide is an example of pure substance but it is also considered as the compound.
Explanation of Solution
The composition of carbon dioxide is fixed in which there is one atom of carbon and two atoms of oxygen. It is found in nature and cannot be separated. The substances are also found in the form of compounds. Compounds are made from two or more elements. But they have selected structure.
The gaseous features explain that carbon dioxide is a pure substance and it is classified as a compound.
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