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CH.17 vocab

Vocabulary

TermDefinition
atom smallest piece of matter that still retains the property of the element.
nucleus the nucleus is a positively charged center.
proton are positive particles.
neutron they are neutral particles.
electron They are negative particles.
quark Protons and neutrons are made up of smaller particles called quarks.
electron cloud It is a cloud made up of electrons surrounding the nucleus.
atomic number The number of protons in an atom is equal to a number called the atomic number.
mass number the sum of 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 mixture of it' s isotopes.
periodic table The table with all of the elements.
group The vertical columns in the periodic table.
electron dot diagram uses the of the element and dots to represent the electrons in the outer energy level.
period The horizontal columns
Created by: anthonyrouse123
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