This is a story board for a scince project
There was a thing that is still around today called the atom. An atom is said to make up everything around us. Many people had thoughts about the atom and how it became to be.
A man named John Dalton discovered the atomic theory. His discovery started the moderen theory of the atom. He said all matter is made up of atoms and atoms cannot be created or destroyed. He also said that all atoms of a certain element are identical and every substance is made up of atoms combined in certain ways.
J.J. Thomson also looked at the atoms. He proved that there were particles in atoms called electrons.
Next came Ernest Rutherford. He said atoms have a small dense center called a nucleus. He also said in the atoms were small particles called protons.
The Atomic Theory
Then came Niels Bohr. He made observations that led to a new theory of how electrons in the atom behaved. Bohr made a model that helps scientist today predict properties of the elements.
The atomic theory today is that there are neutrons and protons in the nucleus of an atom.There are also electrons in the electron cloud. All of those people above helped discover the current atomic theory.
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