1. Using the Periodic Table

2. The Atom –In the Nucleus (center) Protons = positive charge Neutrons = no charge, neutral –Orbiting the nucleus Electrons = negative charge, tiny Number of protons define the type of element!!!

3. 3 Isotopes of Hydrogen 2 Isotopes of Carbon Isotopes

4. The Periodic Table of Elements… …is a tool to organize all the known elements.

5. Each block describes a unique element. Understanding the Information in Each Block

6. What are chemical symbols, Atomic number, and mass number? Beryllium SodiumHeliumHydrogen

7. What about the bold line that looks like stair steps?

8. Metals and Nonmetals. –metal properties –Luster –Conductive –Malleable –Ductile –nonmetal properties –Dull –Nonconductive –Brittle Metalloids share properties of metals and nonmetals.

9. Columns and Rows

10. –An atom can have up to 7 energy levels of electrons. –An element’s period (row) tells us the number of … For example, a Sodium (Na) atom has ___ electron orbitals. Flourine (F) has ___ electron orbitals.

11. –An element’s family (aka group) tells us... –The outer 2 shells of the Group B elements are considered valence electron orbits. We will be able to ignore Group B for now. For example, a Sodium (Na) atom has ___ valence electron. Flourine (F) has ____ valence electrons.

12. A background of the Periodic Table’s development

13. Mendeleev left blank spaces

14. Now for a little practice:

15. For carbon (C): (a)How many electron shells does it have? (b)How many valence electrons does it have? (c)Is it a metal, nonmetal, or metalloid?

16. Answer for carbon (C): (a)2 electron shells (b)4 valence electrons (c)nonmetal

17. For potassium (K): (a)How many electron shells does it have? (b)How many valence electrons does it have? (c)Is it a metal, nonmetal, or metalloid?

18. Answer for potassium (K): (a)4 electron shells (b)1 valence electron (c)metal

19. For copper (Cu): (a)How many electron shells does it have? (b)Is it a metal, nonmetal, or metalloid? (c)How many protons does it have?

20. Answer for copper (Cu): (a)4 electron shells (b)metal (c)29 protons

21. For uranium (U): (a)How many electron shells does it have? (b)Is it a metal, nonmetal, or metalloid? (c)How many protons does it have?

22. Answer for uranium (U): (a)7 electron shells (b)metal (c)92 protons

23. Sources Tillery, Physical Science. www.chem4kids.com