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General Concepts
Part of the Chemistry Review
10
Chemistry
Undergraduate 4
01/05/2017

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Term
mole
Definition
1 mole = "1 gram-mole" = 6.022x1023 units = Avogadro's number
Term
Avogadro's number
Definition
1 mole = "1 gram-mole" = 6.022x1023 units = Avogadro's number
Term
"gram-mole"
Definition
1 mole = "1 gram-mole" = 6.022x1023 units = Avogadro's number
Term
atom
Definition
smallest part of matter that retains the properties of an element
Term
composition of the atom
Definition
protons (positively charged) and neutrons (uncharged) in the nucleus, and electrons (negatively charged) in orbitals around the nucleus
Term
element
Definition
a form of pure matter that contains atoms with the same atomic number
Term
isotope
Definition
an atom of a particular element that has a set number of protons but a varying number of neutrons and mass
Term
mass number
Definition
the number of protons and neutrons in a nucleus
Term
atomic mass unit (amu)
Definition
the unit of mass that is used to describe the masses of atoms
Term
the mass of an atomic mass unit
Definition
1 amu = 1/(6.022x1023) of a gram
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