Notes

Slide Show

Outline

1	Reading the Periodic Table
2	A way of organizing & classifying elements Arranged in rows and columns
3	Columns The vertical (up and down) columns of the periodic table (there are 18) are called groups or families. Elements in the same group or family have similar characteristics or properties.
4	Rows The horizontal rows of the periodic table are called periods. Elements in a period are not alike in properties. The first element in a period is usually an active solid, and the last element in a period is always an inactive gas.
5	Rows Atomic size (number of protons) decreases from left to right across a period. Atomic mass (number of protons) increases from left to right across a period.
6	Rows Metals are on the left Non-metals are on the right
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