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8 terms

Chem electrons

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Atom
The smallest part of an element that contains all of the properties of that element.
Atomic Number
The atomic number is equal to the number of protons (positively charged particles) in the nucleus of an atom.
Electron
A negatively charged particle.
Element
The simplest form of matter.
Molecule
The smallest part of a compound that is made of individual atoms.
Nucleus
The center portion of an atom containing the protons and neutrons.
Proton
A positively charged atomic particle.
Valence Electrons
The outermost ring of electrons in an atom. Used to determine whether an element is an insulator, conductor or semiconductor.