Elements and Periodic Table

1. Elements and Periodic Table SC.8.P.8.6 Recognize that elements are grouped in the periodic table according to similarities of their properties.

2. • Analyze and explain how elements are grouped in the periodic table according to similarities of their properties. Objectives

3. BELLRINGER

4. An element is a pure substance which cannot be split up into two or more simpler substances by chemical means. ELEMENTS H2 All Nitrogen atoms are identical. Lots of them make up the element Nitrogen! Hydrogen

5. Note that an element: • Consists of only one kind of atom. • Cannot be broken down into a simpler type of matter by either physical or chemical means. • Can exist as either atoms (e.g. argon) or molecules (e.g. nitrogen). Elements

6. Atoms Molecules Examples of Elements Is made up of two or more atoms that are chemically bonded together (note: these atoms are of the SAME element!!) Is the smallest particle of an element and has the same chemical properties of the element 1 Hydrogen molecule (H2) 1 Hydrogen atom (H)

7. Microscopic view : of the atomsof the element argon (Ar) (gas phase). Consists of only onekind of atom Atoms of the element Argon

8. Consists of onlyone kind of atom Molecules of the element Nitrogen Microscopic view of the moleculesof the element nitrogen(gas phase).

9. What a mess! Don’t worry, somebody took the time to find a pattern and organize them! There are 118 elements on earth!

10. Guided notes: Have your black and white periodic table ready to highlight, color, circle or underline, when instructed! • Let’s find out more about the Periodic Table! On your left side

11. Let’s check!-Right side According to their _____________ and _____________ (appearance and behavior), elements are classified as ______________, ______________, and ___________. The periodic table is made up of rows called ________________, physical periods chemical properties groups or families and columns called _____________. metals nonmetals metalloids Most elements are _________, they are located on the ____________ side. ___________ are on the _____________! metals left Nonmetals right properties similar Elements with ___________ chemical ___________ are located in the same column or group!

12. Let’s see some properties of the Elements!

13. Class discussion: Why is it important to know the location of elements in the periodic table? We have only 5 min to come up with a meaningful answer… And, if I study the chemical and physical properties of elements then I can learn more about their uses and interactions with other materials The properties of an element can be predicted from its location in the periodic table!

14. On your own now! What am I? Find out my properties and then classify me! Magnesium Where am I on the periodic table? Which group___ Metal?___ Nonmetal?___ Metalloid?____ What other elements are similar to me ____ _____ _____ _____ _____ 2 Sr Ba Be Ca Ra

15. Where am I on the periodic table? Which group___ Metal?___ Nonmetal?___ Metalloid?____ What other elements are similar to me ____ _____ _____ _____ _____

16. Where am I on the periodic table? Which group___ Metal?___ Nonmetal?___ Metalloid?____ What other elements are similar to me ____ _____ _____ _____ _____

17. Exit ticket