See graphic displays of these definitions, and more, at the link below. The important concepts in the definitions are highlighted to help you remember:
Atomic Mass - The weight of an atom.
Atomic Number - The number of protons in an atom.
Compound - A mixture of elements.
Covalent Bond - Occurs when atoms share electrons.
Hydrogen Bond - Occurs in a compound when a hydrogen atom, under the influence of a covalent bond, becomes slightly positive, which then attracts the negative portion of another atom or compound.
Ion - An atom or compound with a positive or negative (not neutral) electric charge
Ionic Bond - Occurs when atoms transfer electrons, resulting in the creation of oppositely charged ions which attract each other.
Matter - Anything composed of atoms.
Molecule - The smallest amount of a compound.
Neutron - A neutrally charged subatomic particle found in the nucleus of an atom. Similar in mass and volume to a proton.
Isotope - A variant of an element containing more or less neutrons than the number of neutrons found in the standard element.
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