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Physical Science 1
Term | Definition |
---|---|
Atom | Smallest piece of matter that still retains the property of the element |
Nucleus | Surrounded by a cloud containing electrons |
Proton | Particles with an electrical charge of 1+ |
Neutron | Neutral particles that do not have an electrical charge |
Electron | Particles with an electrical charge of 1- |
Quark | Protons and neurons, however, are made up of smaller particle called Quarks |
Electron Cloud | The area around the nucleus of an atom where its electrons are most likely found |
Atomic Number | The number of protons in an atom is equal to a number called the atomic number |
Average Atomic Mass | The weighted-average mass of the mixture of its isotopes |
Electron Dot Diagram | The symbol of the element and dots to represent the electrons in the outer energy level |
Group | The vertical columns in the periodic table |
Isotope | Atoms of the same element that have different numbers of neutrons |
Mass Number | The sum of the number of protons and the number of neutrons in the nucleus of an atom |
Period | Horizontal rows of elements on the periodic table |
Periodic Table | Elements are arranged by increasing atomic number and by changes in physical and chemical properties |