Part 2 Atoms and Elements

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Section 2 Atoms and Elements 2.1 Elements and Symbols 2.2 Periodic Table LecturePLUS Timberlake

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Elements Pure substances that can't be isolated into various substances by common procedures Are the building squares of matter 112 components known today Examples: carbon gold calcium LecturePLUS Timberlake

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Symbols of Elements Use 1 or 2 letter shortenings Capitalize the primary letter just Examples: C carbon Co cobalt N nitrogen Ca calcium F fluorine Br bromine O oxygen Mg magnesium LecturePLUS Timberlake

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Symbols from Latin Names Element Symbol Latin name Copper Cu cuprum Gold Au aurum Lead Pb plumbum Mercury Hg hydrargyrum Potassium K kalium Silver Ag argentum Sodium Na natrium Tin Sn stannum LecturePLUS Timberlake

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% Major Elements in the Body O 65.0 % K 0.34 C 18.0 S 0.26 H 10.0 Na 0.14 N 3.0 Cl 0.14 Ca 1.4 Fe 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 LecturePLUS Timberlake

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Learning Check Select the right image for each: A. Calcium 1) C 2) Ca 3) CA B. Sulfur 1) S 2) Sl 3) Su C. Press 1) Ir 2) FE 3) Fe LecturePLUS Timberlake

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Solution Select the right image for each: A. Calcium 2) Ca B. Sulfur 1) S C. Press 3) Fe LecturePLUS Timberlake

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Learning Check Select the right name for each: A. N 1) neon 2) nitrogen 3) nickel B. P 1) potassium 2) phogiston 3) phosphorus C. Ag 1) silver 2) agean 3) gold LecturePLUS Timberlake

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Solution Select the right name for each: A. N 2) nitrogen B. P 3) phosphorus C. Ag 1) silver LecturePLUS Timberlake

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Periodic Table The occasional table is a course of action of the components as indicated by likenesses in their compound and physical properties. LecturePLUS Timberlake

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Physical Properties The attributes of a substance that can be seen without changing the substance. Shading Size Shape Density Freezing and Boiling Points Odor LecturePLUS Timberlake

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Groups of Elements Vertical sections on the occasional table Similar physical properties Similar concoction properties LecturePLUS Timberlake

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Groups on the Periodic Table 1 2 3 4 5 6 7 8 LecturePLUS Timberlake

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Representative Groups Group 1 Alkali Metals Group 2 Alkaline Earth Metals Group 7 Halogens Group 8 Noble Gasses LecturePLUS Timberlake

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Location of Some Groups 1 2 3 4 5 6 7 8 A l m k e a t l an i l s A l k a l i n e H a l o g e n s I G n an e s r e t s LecturePLUS Timberlake

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Periods on the Periodic Table Horizontal columns from Group 1 to Group 8. Numbered 1, 2, 3, … . Incorporate agent components and move components LecturePLUS Timberlake

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Periods on the Periodic Table 1 2 3 4 5 6 LecturePLUS Timberlake

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Learning Check A. Component in Group VIIA, Period 4 1) Br 2) Cl 3) Mn B. Component in Group IIA, Period 3 1) beryllium 2) magnesium 3) boron LecturePLUS Timberlake

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Solution A. Component in Group 7A, period 4 1) Br B. Component in Group 2A, Period 3 2) magnesium LecturePLUS Timberlake

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Learning Check A. Component in Group VIIA, period 4 1) Br 2) Cl 3) Mn B. Component in Group IIA, Period 3 1) beryllium 2) magnesium 3) boron C. Metals in Group IVA 1) Ge, Sn, Pb 2) C, Si 3) C, Si, Ge, Sn D. Nonmetals in Group VA 1) As, Sb, Bi 2) N, P, As 3) N, P, As, Sb LecturePLUS Timberlake

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Solution A. Component in Group VIIA, period 4 1) Br B. Component in Group IIA, Period 3 2) magnesium C. Metals in Group IVA 1) Ge, Sn, Pb D. Nonmetals in Group VA 2) N, P, As LecturePLUS Timberlake

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Metals and Nonmetals Metals Located to one side of the overwhelming line Shiny, pliable Good conveyors of warmth and power Nonmetals Located to one side of the substantial line Dull and fragile Poor conduits, great covers LecturePLUS Timberlake

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Metals and Nonmetals Transition metals NONMETALS METALS LecturePLUS Timberlake

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Learning Check Specify metal (1) or nonmetal (2) for each: A. sulfur ____ B. chlorine ____ C. sodium ____ D. iron ____ E. carbon ____ F. silver ____ LecturePLUS Timberlake

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Solution Specify metal (1) or nonmetal (2) for each: A. sulfur 2 B. chlorine 2 C. sodium 1 D. iron 1 E. carbon 2 F. silver 1 LecturePLUS Timberlake

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Learning Check Select the right components: A. Metals in Group IVA 1) Ge, Sn, Pb 2) C, Si 3) C, Si, Ge, Sn B. Nonmetals in Group VA 1) As, Sb, Bi 2) N, P, As 3) N, P, As, Sb LecturePLUS Timberlake

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Solution A. Metals in Group 4A 1) Ge, Sn, Pb B. Nonmetals in Group 5A 2) N, P, As LecturePLUS Timberlake

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