Elements and Compounds Quick Check

Question

4 of 54 of 5 Items

Question
Which statement best describes the substances N2
and NO2
?(1 point)
Responses

Both are molecules. NO2
is also a compound.
Both are molecules. cap n cap o sub 2 is also a compound.

Both are elements.
Both are elements.

Both are molecules. N2
is also a compound.
Both are molecules. cap n sub 2 is also a compound.

Both are compounds.
Both are compounds.
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Answer 1

The correct response is:

Both are molecules. NO2 is also a compound.

Here's why:

• N2 (nitrogen gas) is a molecule consisting of two nitrogen atoms and is classified as an element because it is made up of only one type of atom.
• NO2 (nitrogen dioxide) is also a molecule but is a compound because it contains two different types of atoms: nitrogen and oxygen.

Therefore, the best description of the substances N2 and NO2 is that both are molecules, and NO2 is also a compound.