1. Introduction to the Periodic Table

2. Important Vocabulary Parts of an atom Parts of an atom * protons – positively charged particle in the nucleus * protons – positively charged particle in the nucleus * neutrons – neutral particle in the nucleus * neutrons – neutral particle in the nucleus * electrons – negatively charged particle that surrounds the nucleus * electrons – negatively charged particle that surrounds the nucleus

3. Dmitri Mendeleev Given credit for designing original periodic table of the elements Given credit for designing original periodic table of the elements He arranged them in order of atomic mass (number of protons and neutrons) He arranged them in order of atomic mass (number of protons and neutrons) He saw that similar properties fell together He saw that similar properties fell together

4. Henry Moseley He rearranged the table and put the elements in order of atomic number (number of protons) He rearranged the table and put the elements in order of atomic number (number of protons)

5. Reading the Periodic Table Atomic number – number of protons and electrons (number at top of box) Atomic number – number of protons and electrons (number at top of box) Atomic mass – number of protons and neutrons added together (number at bottom of box) Atomic mass – number of protons and neutrons added together (number at bottom of box)

6. Organization of the Periodic Table Periods (rows) – increased left to right in increasing atomic number and mass Periods (rows) – increased left to right in increasing atomic number and mass Groups/Families (columns) – elements that share common characteristics Groups/Families (columns) – elements that share common characteristics

7. Metals, nonmetals, and metalloids Using pages 244-245, make a three column chart in your notes that identifies characteristics of the three classifications of elements listed above. Be sure to use the pictures on those pages for information in addition to the text. Using pages 244-245, make a three column chart in your notes that identifies characteristics of the three classifications of elements listed above. Be sure to use the pictures on those pages for information in addition to the text.

8. Metals, metalloids, nonmetals Make a three column chart using labels above. Make a three column chart using labels above. Use pages 244-245 to put the following characteristics in the correct column. They will only fit in one place. Use pages 244-245 to put the following characteristics in the correct column. They will only fit in one place. Malleable and ductile Malleable and ductile Good conductors Good conductors Poor conductors Poor conductors Dull or shiny Dull or shiny Brittle and somewhat ductile Brittle and somewhat ductile Always shiny Always shiny Also called semiconductors Also called semiconductors Always dull Always dull Not malleable or ductile Not malleable or ductile