1. How Do You Read The Periodic Table of the Elements?

2. Protons + Neutrons

3. Rows are called Periods The physical and chemical properties of elements in a row follow a repeating, or periodic, pattern as you move across the period.

4. Columns are called Groups Elements in the same group often have similar chemical and physical properties. For this reason, a group is also called a family.

5. What is Group 1? Group 1 = Alkalai Metals Group contains - Metals Electrons in outer level - 1 Reactivity? - Very Reactive Other shared properties - softness; color of silver; shininess; low density

6. What is Group 2? Group 2 = Alkalaline- Earth Metals Group contains - Metals Electrons in outer level - 2 Reactivity? - Reactive, but not as much as Group 1 Other shared properties - color of silver; higher densities than alkali metals

7. What are Groups 3 - 12? Groups 3-12 = Transition Metals Group contains - Metals Electrons in outer level - 1 or 2 Reactivity? - less reactive than group 2 metals Other shared properties - shininess; good conductors of thermal energy and electric current; higher densities and melting points than elements in Groups 1 and 2 (except for mercury)

8. What are the Lanthanides & Actinides? Transition metals from Periods 6 & 7 Appear as two rows below the table 1st row are the Lanthanides (named after Lanthanum #57) 2nd row are Actinides (named after Actinium #89) Placed here so that the Periodic table wouldn ’ t be so wide.

9. What is Group 13: Boron group? Group 13 = Boron Group Group contains - 1 metalloid & 5 metals Electrons in outer level - 3 Reactivity? - Reactive Other shared properties - solids at room temperature

10. What is Group 14: Carbon group? Group 14 = Carbon group Group contains - 1 nonmetal, 2 metalloids & 3 metals Electrons in outer level - 4 Reactivity? - varies among the elements Other shared properties - solids at room temperature

11. What is Group 15: Nitrogen group? Group 15 = Nitrogen group Group contains - 2 non- metals, 2 metalloids & 2 metals Electrons in outer level - 5 Reactivity? - varies among the elements Other shared properties - solids at room temperature (except for Nitrogen - gas)

12. What is Group 16: Chalcogens? Group 16 = Chalcogens or the Oxygen group Group contains - 3 nonmetals, 1 metalloid & 1 metal Electrons in outer level - 6 Reactivity? - varies among the elements Other shared properties - all but Oxygen are solid at room temperature

13. What is Group 17: Halogens? Group 17 = Halogens Group contains - nonmetals Electrons in outer level - 7 Reactivity? - Very Reactive Other shared properties - poor conductors of electric current, violent reactions with alkalai metals to form salts, never pure in nature

14. What is Group 18: Noble Gases? Group 18 - Noble Gases Group contains - nonmetals Electrons in outer level - 8 Reactivity? - unreactive Other shared properties - colorless, oderless gases at room temperature

15. Why is Hydrogen all alone on the Periodic Table? Electrons in outer level - 1 Reactivity? - Reactive Other properties - colorless, oderless gas at room temperature; low density; explosive reactions with oxygen Properties do not match any other group

16. Next up - Unit 4 on Chemical Bonding!