The Periodic Table. metals, metalloids, nonmetals (semimetals)

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Presentation transcript:

The Periodic Table

metals, metalloids, nonmetals (semimetals)

transition metals

representative elements

Mother Earth Supplemental packet page 28

Our Universe Supplemental packet page 28

Common Elements in the Human Body - Composition by Mass O u CH N o Ca P Ca = calcium P = phosphorus Mg = magnesium K = potassium S = sulfur Na = sodium Cl = chlorine Fe = iron Zn = zinc Supplemental packet page 28

Our Friend - PT A.A periodic table ALWAYS will be made available in class for you to reference when taking an exam or quiz. B.A 118 elements are arranged according to atomic number in horizontal rows and vertical columns. Atomic# & # of proton #protons give physical identity Average atomic mass (amu) atomic mass unit Supplemental packet page 29

Periods n th (horizontal rows) Groups or family (vertical columns) alkali alkaline earth halide or halogens noble gases Group 2, two parts to its family name Supplemental packet page 29

Chemical Reactivity Electron Dot Structure = Group Number = Valence Electron (outermost) Outermost valence electrons provide chemical reactivity 4VE3VE6VE7VE 8VE1VE 2VE5VE

Supplemental packet page 34 Mass Number = Mass Number = number of neutrons plus number of protons Atomic Number =

Supplemental packet page 34