He was surrounded by his family when he was on his deathbed.

My daughter has contracted fifth disease.

I bought a candy apple at the festival.

I have been to Buenos Aires.

Quinoline is an important compound in organic chemistry.

A lynx is a feline animal that lives in the northern hemisphere.

Quinazoline is a compound often used in organic chemistry.

I found a beautiful twinflower in the park.

In this experiment, we will observe the crystallization of naphthalene.

In organic chemistry, stearin is a type of solid fatty acid.