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Patricia Espinoza

on 7 February 2014

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Transcript of -ATOMS-

Two or more atoms may bond with each other to form a molecule.
How is it created?
The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons. The electrons of an atom are bound to the nucleus by the electromagnetic force. Likewise, a group of atoms can remain bound to each other by chemical bonds based on the same force, forming a molecule.
At the center of an atom is a nucleus, because of the size of the nucleus it exerts an attractive force. In orbitals, or 3-d "rings" around the nucleus, there are electrons there can be several orbitals in one atom,sometimes, these orbitals are referred to as energy levels.

A atom is the basic unit of a chemical element.
How is it Formed?

Each energy level can accommodate a certain number of electrons and once it has accepted it's maximum number of electrons, extra electrons have to move to another section or orbital,the energy level closest to the nucleus is called the ground level and it is always filled first.
*Atoms are tiny,indivisible,solid spheres.
*Atoms of an element are all alike and have the same mass.
Who discovered it?
John Dalton was the first person to suggest the idea of the atom as being the smallest particle or building block that created all other materials that is around us. Since the introduction of this theory, numerous scientists of that time also came up, independently, with the idea of existing small particles.
A atom is the basic unit of a chemical element.
As you seen in this prezi the atom is everywhere but cannot be seen.There are three parts of the atom;Neutrons,Nucleus,Protons.Also it is important to eat food that has iron in it.
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