1. Starter Question What are some ways we can classify elements ? (we know by properties but anything else ?)

2. Integrated Science CHAPTER 5.2 THE PERIODIC TABLE

3. SECTION 5.2- THE MODERN PERIODIC TABLE After this presentation you will be able to: SECTION OBJECTIVES 1.Describe the arrangement of the elements in the modern periodic table 2. Explain how the atomic mass of an element is determined and how atomic mass units are defined 3. Identify general properties of metals, metalloids, and nonmetals 4. Describe trends across rows and groups on the periodic table

4. SECTION 5.2- THE MODERN PERIODIC TABLE RECAP - As we learned, elements in the same column of the periodic table are related because their properties repeat at regular intervals

5. SECTION 5.2- THE MODERN PERIODIC TABLE REMINDER -Remember, Mendeleev put the periodic table together in 1860 almost 40 years before Rutherford discovered protons -So, today we can say the periodic table is also organized by atomic number because we know about the nucleus

6. SECTION 5.2- THE MODERN PERIODIC TABLE PERIODS -The rows on the periodic table -The number of elements in a row has to do with the orbitals/energy level of their electrons

7. SECTION 5.2- THE MODERN PERIODIC TABLE PERIODS -As you go down the rows, the elements have one more electron in a new energy level

8. SECTION 5.2- THE MODERN PERIODIC TABLE GROUPS -The columns on the periodic table - Elements in the same group have the same electron configuration, and therefore have similar chemical properties

9. SECTION 5.2- THE MODERN PERIODIC TABLE GROUPS

10. SECTION 5.2- THE MODERN PERIODIC TABLE PERIODIC LAW - The pattern of repeating properties in a group on the periodic table is called the periodic law

11. SECTION 5.2- THE MODERN PERIODIC TABLE CLASSIFYING ELEMENTS -We can classify elements by: -1.properties -2. natural occurrence -3. state of matter at room temp.

12. SECTION 5.2- THE MODERN PERIODIC TABLE 2 PERIODIC TABLES 1.Color in elements by states of matter 2.Color in elements by properties

13. Starter Question Give an example of an element for each state of matter Solid: Liquid: Gas: DATE: Monday February 4 th 2013

14. Integrated Science * CLASSIFYING BY STATE OF MATTER

15. Integrated Science * CLASSIFYING BY PROPERTIES