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Periodic Table

Review for the periodic table exam

QuestionAnswer
How do you find the number of energy levels an atom has? By looking at which period (row) the element is located on the periodic table.
Which particle of an atom has almost NO mass? electron
How do you find the mass number of an atom? Add the protons and neutrons in the nucleus.
Which elements have properties of both metals & nonmetals? metalloids
Which elements on the periodic table are non-reactive? noble gases
Which elements are most similar - the elements in a group or the elements in a period? group
Looking at period 3 on the periodic table..do the metals or nonmetals have a larger mass? nonmetals
Which atom particle determines its identity? proton
What determines an atom's reactivity? valence electrons
The periodic table is arranged by what property of an atom? atomic #
Which particle determines an element's atomic #? proton
What is the electric charge of an atom? neutral
Which particles are in the nucleus? protons & neutrons
Created by: dmiles
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