Periodic Table The most useful tool in the Lab. Early Organization J.W. Dobereiner (1829) organized elements in triads Triad – three elements with similar.
Periodic Table of Elements Pages 124-167 Ch.4.1, 4.2, 4.3, 4.4 and 5.1 MEET THE ELEMENTS.
PERIODICITY Guys, Groups, Trends, Creations Guys.
P ERIODIC T RENDS. 1. W HICH OF THE ELEMENTS IS THE METALLOID ? 1. Aluminum 2. Silicon 3. Chlorine 4. Magnesium 5. Sulfur.
Compounds Video Clip: Why it Matters. NOTES 2: VALENCE ELECTRONS, LEWIS DOT DIAGRAMS, AND OXIDATION NUMBERS.
Periodic Families. The Periodic Table What does the word periodic mean? pe·ri·od·ic –adjective 1. recurring at intervals of time: periodic revivals.
The Periodic Table: Organizing the Elements. Dmitri Mendeleev (1834-1907) constructed the first periodic table he listed the elements in columns in order.
Do Now Which list includes elements with the most similar chemical properties? 1. Br, Ga, Hg 2. Cr, Pb, Xe 3. O, S, Se 4. N, O, F.
Chapter 8 Homework posted Lab Notes Today’s Topic: Bond Properties (Sec. 8.4- there is no 8.3!) Electron Distribution in Molecules (8.5) November 16, 2009.
The Periodic Table Pre-Periodic Table Chemistry … …was a mess!!! No organization of elements. Imagine going to a grocery store with no organization!!
Atomic Structure 8 th Grade Science. Parts of an Atom Protons = positive charge 1+ Neutrons = do not have a charge (0) Electrons = negative charge 1-
A Dream Mendeleev - most well known for being the creator of the periodic table and predicting elements that were not yet discovered. Rumor has it that.
