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ch. 17 vocab TP

Sections 1,2,3

QuestionAnswer
Atom the smallest piece of matter that still retains the property of the element
Nucleus surrounded by a cloud containing electrons
Proton surrounded by a cloud containing electrons
neutron electrical charge of 1+
electron electrical charge of 1-
quark Protons and neutrons however are made up of smaller particles
electron cloud the area around the nucleus of an atom were its electrons are most likely found
Atomic number number of protons in an atom is equal to a number
Mass number the sum of the number protons and the number of neutrons in the nucleus of an atom
isotope Atoms of the same element that have different numbers of neutrons
average atomic mass the weighted average mass of the mizture of its isotopes
Periodic table The arrangement the elements are orded
group vertical columns in the periodic table
electron dot diagram the symbol of the elements and dots to represent the electrons and dots to represent the electrons in other energy levels
Period Horizontal row of elements on the periodic table on the periodic table
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