Which is a characteristic of atoms?

Question

They come in ten major types.
They are the smallest units of matter.
They can be found in nonliving things only.
They cannot combine together.

Answer 1

The correct characteristic of atoms is: They are the smallest units of matter.

Atoms are indeed the fundamental building blocks of matter and are the smallest units that retain the properties of an element. The other statements are incorrect as there are more than ten major types of atoms (elements), they can be found in both living and nonliving things, and they can combine together to form molecules and compounds.