ATOMS AND ATOMIC STRUCTURE Atom Nucleus Proton Neutron Electron

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Presentation transcript:

ATOMS AND ATOMIC STRUCTURE Atom Nucleus Proton Neutron Electron

WHAT IS AN ATOM? The smallest unit of an element. Consists of a central nucleus surrounded by one or more electrons.

WHAT IS THE NUCLEUS? The central part of an atom. Composed of protons and neutrons. Contains most of an atom's mass.

WHAT IS A PROTON? Positively charged particle. Found within an atomic nucleus.

WHAT IS A NEUTRON? Uncharged particle. Found within an atomic nucleus.

WHAT IS AN ELECTRON? Negatively charged particle. Located in shells that surround an atom's nucleus.

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