Molecules ending in -ite and -ate
Molecules ending with -ite contain fewer oxygen atoms than those ending with -ate. E.g. sodium nitrite NaNO2 has fewer oxygen atoms than sodium nitrate NaNO3.
The opera singer complained that her tight (-ite) corset prevented her from getting enough oxygen.
When she removed it, her lungs could inflate (-ate) and she could breathe in more oxygen.
