physical science chap. 8
Terms
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- ion
- a charged atom or group of atoms formed by the loss or gain of electrons
- electrolyte
- a solute that ionizes in solution and conducts electricity
- free electron theory
- a description of metallic bonding that uses randomly shared electrons to explain the properties of metals
- chemical bonds
- the attraction that holds atoms together
- triple bond
- a bond in which three pairs of electrons are shared by the elements
- ionic bond
- a chemical bond in which electrons are transferred from one atom to another
- formula unit
- a basic repeating unit of an ionic solid
- anion
- an ion with a negative charge
- metallic bond
- a chemical bond in which metal atoms are thought to randomly share their valence electrons
- crystal lattice
- a solid structure formed by a regular alternating pattern of positive and negative ions
- covalent bond
- a chemical bond formed by atoms sharing electrons
- double bonds
- occur when two pairs of electrons are shared in a covalent bond
- electronegativity
- the measure of how strongly an atom holds its electrons
- cation
- an ion with a positive charge
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Lewis dot structures or
electron dot notation - a method of representing atoms and ions that uses an element's symbol for the nucleus and inner electrons and a series of dots for the valence electrons
- diatomic molecule
- a molecule formed of two identical atoms bonded together
- molecule
- a particle made up of two or more atoms chemically joined together; a particle formed by a limited number of atoms bonded covalently; the basic unit of a covalent compound