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Positively charged particle located in the nucleus of an atom.
Particle with no charge located in the nucleus of an atom
Negatively charged particle found outside the nucleus of an atom.
Smallest particle into which an element can be divided and still have the properties of that element.
Center of an atom where protons and neutrons can be found; the majority of the mass of an atom is found in the nucleus.
Region around the nucleus where electrons may be found.
Electrons in the outermost energy level of an atom; in large part determines an element's chemical properties.
Number of protons in the nucleus of one atom of an element
Average mass of one atom of an element
The number of protons and neutrons in the nucleus of an atom.
In an atom, the specific areas at definite distances around the nucleus; each energy level can hold a specific number of electrons
Smaller parts of atoms; protons, neutrons, electrons
Unit used to measure atoms
AMU (atomic mass unit)
Atom or molecule that has an overall electric charge due to loss or gain of electrons
Substances that are the building blocks of all matter, an element is made up of one kind of atom.