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1.2 The Simplest Mat

6th grade science

QuestionAnswer
atomic number the number of protons in the nucleus of each atom of that element
isotopes atoms of the same element that have different numbers of neutrons
mass number the number of protons plus the number of neutrons it contains
atomic mass the weighted average mass of the isotopes of an element.
metals have a shiny or metallic luster and are good conductors of heat and electricity. All metals, except mercury are solids at room temperature.
nonmetals elements that are usually dull in appearance
metalloids elements that have characteristics of metals and nonmetals
Created by: the98789
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