0708_atoms_definitions and structure.ppt
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An atom is the smallest unit of an element, consisting of a central nucleus made of protons and neutrons surrounded by electrons. The nucleus contains most of the atom's mass, with protons being positively charged and neutrons being uncharged, while electrons are negatively charged and orbit around the nucleus. Overall, the document provides a basic overview of atomic structure and the particles that compose an atom.
0708_atoms_definitions and structure.ppt
- 1. ATOMS AND ATOMIC ATOMS AND ATOMIC STRUCTURE STRUCTURE Atom Nucleus Proton Neutron Electron Atom Nucleus Proton Neutron Electron
- 2. WHAT IS AN ATOM? WHAT IS AN ATOM? o The smallest unit of The smallest unit of an element. an element. o Consists of a Consists of a central nucleus central nucleus surrounded by one surrounded by one or more electrons. or more electrons.
- 3. WHAT IS THE NUCLEUS? WHAT IS THE NUCLEUS? o The central part of The central part of an atom. an atom. o Composed of Composed of protons and protons and neutrons. neutrons. o Contains most of an Contains most of an atom's mass. atom's mass.
- 4. WHAT IS A PROTON? WHAT IS A PROTON? o Positively charged Positively charged particle. particle. o Found within an Found within an atomic nucleus. atomic nucleus.
- 5. WHAT IS A NEUTRON? WHAT IS A NEUTRON? o Uncharged particle. Uncharged particle. o Found within an Found within an atomic nucleus. atomic nucleus.
- 6. WHAT IS AN ELECTRON? WHAT IS AN ELECTRON? o Negatively Negatively charged particle. charged particle. o Located in shells Located in shells that surround an that surround an atom's nucleus. atom's nucleus.
- 7. Welcome to MATTERVILLE !!! Welcome to MATTERVILLE !!!