This sentence contains an apostrophe.

We enjoy playing card games as a family every weekend.

I will make homemade tortelloni tonight.

Priestley is my best friend.

This apartment has an automatic locking system.

He is known as an eccentric artist.

His eccentric behavior sometimes confuses people.

A femtometer is a unit of length, equal to 10 to the negative 15th power of a meter.

The top quark is the heaviest quark in particle physics.

This bacterium is about 1 micrometre in size.