1. Chemistry White Board Review Ch. 5,14, & 28

2. For each question You will have 10 seconds to write your answer You are competing against the person at your table – The person that gets it right gets a point – If you both get it right both earn a point – You keep track of your own points – Keep your partner honest!

3. Are you ready????

4. 1. What does atomic number indicate? # of protons

5. 2. What differentiates the isotopes of carbon from each other? They have different number of neutrons.

6. 3. What do the elements in a group have in common? They have the same amount of valence electrons = similar reactivity

7. 4. For Carbon-14, what does the number 14 represent? Mass number of 14.

8. 5. What are the vertical columns of the periodic table called? Groups

9. 6. What determines mass number? # protons and neutrons

10. 7. What is the atomic mass of fluorine?

11. 8. Where is the majority of the mass of an atom found? The nucleus (protons & neutrons)

12. 9. How does electronegativity change across the periodic table? Increases from left to right Increases from bottom to top

13. 10. What is ionization energy? the energy change that accompanies the loss of an electron from a gaseous atom

14. 11. Which metals are known as the alkali metals? Group 1

15. 12. Which elements are the halogens? Group 7 (17a)

16. 13. Write the equation for the beta decay of Polonium-216

17. 14. Write the equation for the alpha decay of Polonium-216

18. 15. On a separate piece of paper,, explain how the mass of the elements is calculated for the periodic table using % abundance.