1. LecturePLUS Timberlake1 Chapter 3 Atoms and Elements 3.1 Elements and Symbols 3.2 Periodic Table

2. LecturePLUS Timberlake2 Elements Pure substances that cannot be separated into different substances by ordinary processes Are the building blocks of matter 112 elements known today Examples: carbon gold calcium

3. LecturePLUS Timberlake3 Symbols of Elements Use 1 or 2 letter abbreviations Capitalize the first letter only Examples: C carbon Cocobalt N nitrogenCacalcium F fluorine Br bromine O oxygen Mg magnesium

4. LecturePLUS Timberlake4 Symbols from Latin Names ElementSymbolLatin name CopperCucuprum GoldAuaurum LeadPbplumbum MercuryHghydrargyrum PotassiumKkalium SilverAgargentum SodiumNanatrium TinSnstannum

5. LecturePLUS Timberlake5 % Major Elements in the Body O65.0 %K 0.34 C18.0S 0.26 H10.0Na 0.14 N 3.0Cl 0.14 Ca 1.4Fe 0.004 P 1.0 Zn 0.003 Mg 0.50 Trace Elements As, Cr, Co, Cu, F, I, Mn, Mo, Ni, Se, Si, V

6. LecturePLUS Timberlake6 Learning Check Select the correct symbol for each: A. Calcium 1) C2) Ca3) CA B. Sulfur 1) S2) Sl3) Su C. Iron 1) Ir2) FE3) Fe

7. LecturePLUS Timberlake7 Learning Check Select the correct name for each: A. N 1) neon2) nitrogen 3) nickel B. P 1) potassium2) phogiston 3) phosphorus C. Ag 1) silver2) agean3) gold

8. LecturePLUS Timberlake8 Periodic Table The periodic table is an arrangement of the elements according to similarities in their chemical and physical properties.

9. LecturePLUS Timberlake9 Physical Properties The characteristics of a substance that can be observed without changing the substance. Color Size Shape Density Freezing and Boiling Points Odor

10. LecturePLUS Timberlake10 Groups of Elements Vertical columns on the periodic table Similar physical properties Similar chemical properties

11. LecturePLUS Timberlake11 Groups on the Periodic Table 1 2 3 4 5 6 7 8

12. LecturePLUS Timberlake12 Representative Groups Group 1Alkali Metals Group 2 Alkaline Earth Metals Group 7 Halogens Group 8Noble Gases

13. LecturePLUS Timberlake13 Location of Some Groups 1 2 3 4 5 6 7 8 A l m k e a t l a i l s AlkalineAlkaline HalogensHalogens I G n a e s r e t s

14. LecturePLUS Timberlake14 Periods on the Periodic Table Horizontal rows from Group 1 to Group 8. Numbered 1, 2, 3, …. Include representative elements and transition elements

15. LecturePLUS Timberlake15 Periods on the Periodic Table 123456123456

16. LecturePLUS Timberlake16 Learning Check A. Element in Group 17, Period 4 1) Br2) Cl3) Mn B. Element in Group 2, Period 3 1) beryllium2) magnesium 3) boron

17. LecturePLUS Timberlake17 Learning Check A. Element in Group 17, period 4 1) Br2) Cl3) Mn B. Element in Group 2, Period 3 1) beryllium2) magnesium 3) boron C. Metals in Group 14 1) Ge, Sn, Pb 2) C, Si 3) C, Si, Ge, Sn D. Nonmetals in Group 15 1) As, Sb, Bi 2) N, P, As 3) N, P, As, Sb

18. LecturePLUS Timberlake18 Metals and Nonmetals Metals Located to the left of the heavy line Shiny, ductile Good conductors of heat and electricity Nonmetals Located to the right of the heavy line Dull and brittle Poor conductors, good insulators

19. LecturePLUS Timberlake19 Metals and Nonmetals NONMETALS METALS Transition metals

20. LecturePLUS Timberlake20 Learning Check Specify metal (1) or nonmetal (2) for each: A. sulfur____ B. chlorine____ C. sodium____ D. iron____ E. carbon____ F. silver____

21. LecturePLUS Timberlake21 Learning Check Select the correct elements: A. Metals in Group 14 1) Ge, Sn, Pb 2) C, Si 3) C, Si, Ge, Sn B. Nonmetals in Group 15 1) As, Sb, Bi 2) N, P, As 3) N, P, As, Sb