1. Periodic Table of the Elements Review TESLA August 2008

2. Workshop goals What is matter? What is the atom? And what does it have to do with matter? How is the periodic table of elements organized?

3. Big Idea Elements and their combinations account for all the varied types of matter in the world.

4. What is matter? Examples Measuring matterTypes

5. The classical elements are one way to organize matter

6. A more modern classification system is the “states of matter”.

7. MATTER MASS & VOLUME SOLIDLIQUIDGAS STATES OF MATTER has

8. Matter is made of atoms

9. Matter made up of one type of atom is a pure substance called an element.

10. Atoms can also combine to make molecules

11. Atoms and molecules behave differently in different states of matter.

12. MATTER MASS &VOLUME SOLIDLIQUIDGAS STATES OF MATTER made up of ATOMS ELEMENTS of one type make has

13. Our current model of an atom Warning: not to scale

14. The type of atom is determined by the number of protons in the atom.

15. Electrons are arranged around the nucleus in specific energy levels called shells. n=3 n=2 n=1

16. MATTER MASS & VOLUME SOLIDLIQUID GAS STATES OF MATTER made up of ATOMS ELEMENTS of one type make NUCLEUS Inside Protons + & Neutrons Outside Electrons - made of has

17. Mixtures and solutions lesson 2 1)Elements are organized in the periodic table based on their chemical properties. 2)Elements are classified as metals or nonmetals. 3)Metals are good conductors of electricity and heat and nonmetals are not. Lesson Content GoalsGuiding Questions 1)How are elements arranged in the periodic table of elements? 2) How are elements classified? 3) What are some differences between metals and nonmetals?

18. Engaging scenario “I really appreciate your helping my neighbor put those molecules back together. However, now I need your help. I bought some card models of elements, which came in special containers. While I was gone, my nephew got some of the cards out of their corresponding containers, mixed them up and left them on top of the table. I want to put them back, but I cannot figure out to which container they belong. There are several different things that could be used to group them, but I don’t know which is the right way. There are three colors of cards: blue, yellow and green. On one side of the cards, the letter symbol of the element and its name are displayed (the NAME side). On the other side, it shows the parts that make up an atom of the element and its symbol (the PARTS side). How can I put them back together? What is the problem I need to solve?”

19. Conclusions The rows in my table represent …….because…… The columns in my table represent …..…because…….…

20. Problems to solve using your table Which elements in your table have 7 electrons in their outer shells? Which elements in your table have three shells? In which column and row would you most likely find an element with 4 shells and 5 electrons in their outer shell? What are the total # of protons this element has?

21. Problems to solve using your table Which elements in your table have 7 electrons in their outer shells? Which elements in your table have three shells? In which column and row would you most likely find an element with 4 shells and 5 electrons in their outer shell? What are the total # of protons this element has?

22. Oh yeah, I actually had 18 containers

23. Elements are classified as metal, metalloid or nonmetal.

24. Elements in the same group (column) behave in a similar way. Alkali- one outer electron, given away to other elements Alkaline- two valence electrons given away to other elements Halogens- attracts one electron from another elements Noble gases: nonreactive

25. Review goals What is matter? What is the atom? and what does it have to do with matter? How is the periodic table of elements organized?

26. RESOURCES www.chem4kids.com http://www.irvingisd.net/~rflint/the_periodic_table 1.htmhttp://www.irvingisd.net/~rflint/the_periodic_table 1.htm www.ChemicalElement.com www.school-for-champions.com/default.htm www.Chemistry.about.com www.Webelements.com