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8 Cards in this Set

  • Front
  • Back
a group of more than one atom joined together that acts like a single particle
molecule
the dense center part of an atom
nucleus
a particle with a negative charge moving around the nucleus of an atom
electron
an uncharged particle in the nucleus of an atom

(remember: None....Neutral)
neutron
a particle with a positive charge in the nucleus of an atom
Proton
the smallest unit of an element that still has the properties of the element
atom
a chemical combination of two or more elements into a single substance
compound
a basic building block of matter; a pure substance that cannot be broken down into anything simpler
element