The Periodic Table of Elements

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Presentation transcript:

The Periodic Table of Elements

The first version of the periodic table was created by a Russian scientist, Dmitri Mendeleev in the 1860’s.

He organized his first periodic table by arranging the elements in order of increasing atomic mass.

It has taken over 10 scientists over 100 years to compile the periodic table that we know today. Pierre and Marie Curie John Newland Sir William Ramsey Lord Rayleigh

Chemists organize the elements in a periodic table. The elements are arranged in horizontal rows (left to right) in order of the number of protons in their nucleus. This is the element’s Atomic Number.

Horizontal rows are called periods.

Vertical columns are called groups or families.

Some Common Elements Memorize the following list of elements – spelling counts! Name Symbol Name Symbol nitrogen N carbon C chlorine Cl potassium K hydrogen H neon Ne calcium Ca oxygen O gold Au silver Ag magnesium Mg aluminum Al sodium Na silicon Si sulfur S copper Cu boron B helium He