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The periodic table

The periodic table. What do we know?. How is it arranged?. Correct – it’s arranged by atomic number. What do the decimal numbers represent? Maybe the table is arranged by these average masses? Is there evidence that it’s not?. Are most elements metals or nonmetals?.

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The periodic table

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  1. The periodic table What do we know?

  2. How is it arranged? • Correct – it’s arranged by atomic number. • What do the decimal numbers represent? • Maybe the table is arranged by these average masses? Is there evidence that it’s not?

  3. Are most elements metals or nonmetals?

  4. What are some properties of metals?

  5. Is hydrogen (H) a metal?

  6. What do the black, blue and red symbols mean?

  7. Hardness • Which are harder: alkali metals or alkaline earth metals?

  8. New: Families

  9. Name a family of unreactive gases

  10. Are all of the halogens gases?

  11. What are some properties of nonmetals?

  12. Know this: • A row is also called a __________ • A column is referred to as a _______ or a _______ • Group/Family numbers

  13. Transition metals

  14. Inner Transition metals • Lanthanides • Actidines • Rare earth metals

  15. Metalloids

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