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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 »

Atom - Wikipedia

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An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of ...

What is an atom?

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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,  ...

Questions and Answers - What is an atom? What are atoms made of?

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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 ...

What is an Atom? | Parts of an Atom - Live Science

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Jun 5, 2013 ... Atoms are the basic units of matter. They are made up of three particles: protons, neutrons and electrons. Definition of an atom, nucleus, proton, ...

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Nov 13, 2012 ... Science expert Emerald Robinson explains what an atom is. To view over 15000 other how-to, DIY, and advice videos on any topic, visit ...

What is a neutral atom? | Reference.com

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Atoms lose their neutrality when electrons are either lost or gained. Atoms that have lost or gained electrons are called ions. Neutral atoms have the same ...

What Is an Atom? - Chemistry - About.com

chemistry.about.com/od/atomicstructure/f/What-Is-An-Atom.htm

Make an Atom Model. 3. 10 Interesting Facts About Atoms. 4. Essential Element Facts in Chemistry. 5. What the Numbers on the Periodic Table Mean. About.

What is An Atom? - Definition & Examples - Video & Lesson ...

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Mar 25, 2015 ... After watching this video, you will be able to explain what an atom is, how it is structured, what they are made from, and give some examples of.

Matter, elements, and atoms | Elements and atoms | Chemistry of life ...

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 ...