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Atom
Atoms are the basis of chemistry. They are the basis for everything in the Universe. You should start by remembering that matter is composed of atoms. Atoms and the study... More »

en.wikipedia.org/wiki/Atom

Atom, from the Greek word atomos, which means indivisible, was first conceived around 2,400 years ago by a Greek man named Democritus. An atom is the ...

simple.wikipedia.org/wiki/Atom

An atom is the basic unit that makes up all matter. There are many different types of atoms, each with its own name, mass and size. These different atoms are ...

www.livescience.com/37206-atom-definition.html

Aug 8, 2017 ... Atoms are the basic units of matter. They are made up of three particles: protons, neutrons and electrons. Definition of an atom, nucleus, proton, ...

www.khanacademy.org/science/biology/chemistry--of-life/elements-and-atoms/a/matter-elements-atoms-article

Learn about the structure of the atom, and how atoms make up matter. An atom is the smallest unit of matter that retains all of the chemical properties of an ...

atom.io

At GitHub, we're building the text editor we've always wanted: hackable to the core, but approachable on the first day without ever touching a config file. We can 't ...

www.chem4kids.com/files/atom_intro.html

Chem4Kids.com! This tutorial introduces atoms in chemistry. Other sections include matter, elements, the periodic table, reactions, and biochemistry.

www.brainpop.com/science/matterandchemistry/atoms

In this educational animated movie about Science learn about neutrons, protons, molecules, and nuclei.

education.jlab.org/qa/atom.html

An answer to the question: What is an atom? What are atoms made ... Atoms are composed of particles called protons, electrons and neutrons. Protons carry a ...

www.qrg.northwestern.edu/projects/vss/docs/propulsion/1-what-is-an-atom.html

An atom a fundamental piece of matter. (Matter is anything that can be touched physically.) Everything in the universe (except energy) is made of matter, and, so,  ...