Atoms and Molecules

Atoms and Molecules

Everything around us is made of tiny particles called atoms. Atoms are the smallest units of matter and are the building blocks of all substances. When atoms bond together, they form molecules, which make up solids, liquids, and gases. Understanding atoms and molecules helps scientists explain how diffe...

All matter around us, like your book, laptop, and even living organisms, are made up of tiny building blocks called atoms.

The center of an atom is its nucleus, which contains protons with a positive charge and neutrons with no charge.

Surrounding the nucleus are electrons with a negative charge that exist around the nucleus.