2. ELEMENTS!

3. Elements The “building blocks” of all matter Cannot be broken down into simpler substances 118 known elements (92 natural, 26 artificial) Elements are organized on the Periodic Table by their number of protons.

4. EXAMPLES (Draw 3) Helium (He) Neon (Ne) Gold (Au)

5. MORE EXAMPLES https://www.youtube.com/watch?v=aPq3S EteEJc https://www.youtube.com/watch?v=d0zIO N8xjbM

6. A beginning guide to help you get started.

7. On the periodic table… Rows are called “periods” Columns are called “groups”

8. Find and lightly circle the elements in the following positions on your periodic table: Period 1, Group 1 Period 2, Group 14 Period 3, Group 1 Period 2, Group 16 Period 3, Group 17 Period 4, Group 8 Period 2, Group 15 Hydrogen (H) Carbon (C) Sodium (Na) Oxygen (O) Chlorine (Cl) Iron (Fe) Nitrogen (N)

9. On the periodic table… Rows are called “periods” Columns are called “groups” Elements that are close together tend to share similar characteristics. Each element is represented by a box.

10. 1 H Hydrogen 1.00794 Each element appears this way on the periodic table. Each element has four parts on the Periodic Table.

11. 1 H Hydrogen 1.00794 The four parts of the periodic table are: Atomic Number Chemical Symbol Element Name Atomic Mass (Weight)

12. What is the Chemical Symbol for Carbon? Quick Quiz What is the Chemical Symbol for Iron? What is the Chemical Symbol for Chlorine? What is the Chemical Symbol for Nitrogen? What is the Chemical Symbol for Gold?

13. What is the Chemical Symbol for Carbon? Quick Quiz What is the Chemical Symbol for Iron? What is the Chemical Symbol for Chlorine? What is the Chemical Symbol for Nitrogen? What is the Chemical Symbol for Gold? C Au N Cl Fe

14. What is the Atomic Number for Carbon (C)? Quick Quiz What is the Atomic Number for Iron (Fe)? What is the Atomic Number for Chlorine (Cl)? What is the Atomic Number for Nitrogen (N)? What is the Atomic Number for Gold (Au)?

15. What is the Atomic Number for Carbon (C)? Quick Quiz What is the Atomic Number for Iron (Fe)? What is the Atomic Number for Chlorine (Cl)? What is the Atomic Number for Nitrogen (N)? What is the Atomic Number for Gold (Au)? 6 79 7 17 26

16. Atomic Number 1 H Hydrogen 1.00794 The Atomic Number equals the number of protons in one atom of that element. Hydrogen has 1 proton

17. Atomic Number 6 C Carbon 12.011 The Atomic Number equals the number of protons in one atom of that element. Carbon has 6 Protons

18. How many protons does Oxygen have? Quick Quiz How many protons does Chlorine have? How many protons does Sodium have? How many protons does Nitrogen have? How many protons does Gold have?

19. How many protons does Oxygen have? Quick Quiz How many protons does Chlorine have? How many protons does Sodium have? How many protons does Nitrogen have? How many protons does Gold have? 8 79 7 11 17