1. Unit 3 Review Periodic Trends

2. How many valence electrons does aluminum have? 1. one 2. two 3. three 4. four

3. What period does sodium (Na) belong to? 1. 1 2. 2 3. 3 4. None of the above

4. Tell me 3 or 4 things about each element based on its position on the periodic table: Tell me 3 or 4 things about each element based on its position on the periodic table: #31 Gallium #31 Gallium 3 valence electrons in the 4 th energy level 3 valence electrons in the 4 th energy level metal metal #52 Tellurium #52 Tellurium 6 valence electrons in the 5 th energy level 6 valence electrons in the 5 th energy level metalloid metalloid # 2 Helium # 2 Helium 2 valence electrons in the 1 st energy level 2 valence electrons in the 1 st energy level Nonmetal Nonmetal Noble gas Noble gas

5. Which is the most important subatomic particle when determining an element’s chemical properties? 1. electrons 2. protons 3. neutrons 4. All are equal

6. Draw the Lewis Dot structures for the following elements: Be PO Al Br Al Br Volunteers for Board Work?

7. In order to fill its outermost energy level, fluorine will most likely: 1. gain electrons 2. lose electrons 3. gain protons 4. lose neutrons

8. What is the relationship between valence electrons and position on the periodic table? 1. similar period 2. similar group 3. similar atomic number 4. similar mass number

9. How many empty spaces in the outermost energy level does sulfur have? 1. one 2. two 3. six 4. seven

10. What do beryllium and calcium have in common? 1. same group 2. same number of valence electrons 3. all of the above

11. How many neutrons are present in an atom of carbon-14? 1. 6 2. 12 3. 8 4. 14

12. How many electrons does a Mg 2+ ion have? 1. 12 2. 10 3. 14 4. 2

13. What is the charge on a chlorine ion that has 18 electrons? 1. 1 + 2. 1 - 3. 2 + 4. 0

14. Family Name of group 17? 1. Alkali 2. Transition Metals 3. Group II - Metals 4. Noble Gases 5. Halogens

15. This family has 8 valence electrons? 1. Alkali 2. Transition Metals 3. Group II - Metals 4. Noble Gases 5. Halogens

16. The element silicon is an example of a … 1. Metal 2. Nonmetal 3. Metalloid

17. These are found on the far right side of the periodic table… 1. Metals 2. Nonmetals 3. Metalloids

18. Rank your use of the class website. 1. I don’t have access to the internet at home. 2. I don’t know how to get to the website. 3. I have access to the website but don’t find it helpful 4. I use it sometimes. 5. I use the website everyday.