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 ...
Atoms are the basic units of matter. They are made up of three particles: protons, neutrons and electrons. Definition of an atom, nucleus, proton, neutron, electron ...
What are atoms? Atoms are the basic building blocks of matter that make up everyday objects. A desk, the air, even you are made up of atoms! There are 90 naturally ...
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An easy-to-understand introduction to atoms, molecules, elements, compounds, ions, and isotopes.
STRUCTURE OF THE ATOM. Matter has mass and takes up space. Atoms are basic building blocks of matter, and cannot be chemically subdivided by ordinary means.
Introduction to How Atoms Work - Atoms are in your body, the chair you are sitting in, your desk and even in the air. Learn about the particles that make the universe ...
Chem4Kids.com! This tutorial introduces atoms in chemistry. Other sections include matter, elements, the periodic table, reactions, and biochemistry.
Chem4Kids.com! This tutorial introduces atomic structure in chemistry. Other sections include matter, elements, the periodic table, reactions, and biochemistry.
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 types of atoms are ...