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What are valence electrons?
Electrons that interact with other atoms to form chemical bonds
Located in outer most shell
What is atomic mass?
number of protons and number of neutrons
differs among isotopes of an element
What is an ion?
charged ion - too many or too few electrons than protons
What is a cation?
positively charged ion
What is anion?
Negatively charged ions
What is the atomic number?
Number of protons in nucleus
fixed for every element
What is a isotope?
varient forms of an atom that differ with respect to number of neutrons in nucleus
EX. oxygen - two fairly common isotopes
Oxy 16 and Oxy 18
What is a ionic bond?
bond between ions held by electrical charge
What is a covalent bond?
bond between atoms sharing an electron
strongest of the two bonds
What is the definition of a mineral?
Naturally occurring, generally inorganic solid with definable composition and a fixed crystalline structure