Author: Max Delgadillo
Atoms are the basic units of matter. The word atom derived from the Greek word for indivisible because atoms are believed to be the smallest things in the universe. About 10,000 to 100,000 atoms can fit on the tip of a needle. I know, atoms are really tiny and you need a really big machine to see really small bits of mass and matter.
Atoms are made up of three particles, protons, neutrons, and electrons. After the Big Bang about 13.7 billion years ago, atoms were created. In the center of an atom there is something called a nucleus. Surrounding the nucleus there are neutrons, protons, and electrons. All atoms are created by subatomic particles. Different elements, or atoms, have a different amount of protons and neutrons. For example, an atom of gold is bigger and heavier than an atom of iron because of how much protons and neutrons the atom has.
Atoms are so tiny that a single atom is hundreds of thousands of times thinner than a human hair. You would need an electron microscope just to be able see one because of how tiny they are. When atoms combine or come together, they create something called a molecule. Molecules are a group of atoms that come together to make something just a little bit bigger. Atoms can also make something called ions. An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons. If you think that an ant is small or tiny, think again, because I think that atoms are smaller.