Which of the following functional groups contains a $C=O$ group directly bonded to a $N$ atom?

The highlighted part of this molecule is derived from which functional group?

Given two compounds, $\mathrm{CH}{3}_3\mathrm{CH}-\mathrm{OH}$ and $\mathrm{CH}{3}_3\mathrm{CO}H$, what is the relationship between them?

Which property of $C$ best explains its ability to form large and complex molecules?

A vegetable dye that produces reddish highlights is commonly known as:

Which of the following is an organic molecule?

Which of the following best describes an organic peroxide functional group?

Which of the following hydrocarbons is classified as unsaturated?

For a carbon atom with the electron configuration ${\mathrm{1s}}^2{\mathrm{2s}}^i{\mathrm{2p}}^j$, what are the values of $i$ and $j$ in its ground state?