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DO NOW: REVIEW FROM YESTERDAY: You need your reference table… Name the element 1.Period 7, group 1 2.Period 4, Halogen family 3.2 energy shells, Alkaline.

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Presentation on theme: "DO NOW: REVIEW FROM YESTERDAY: You need your reference table… Name the element 1.Period 7, group 1 2.Period 4, Halogen family 3.2 energy shells, Alkaline."— Presentation transcript:

1 DO NOW: REVIEW FROM YESTERDAY: You need your reference table… Name the element 1.Period 7, group 1 2.Period 4, Halogen family 3.2 energy shells, Alkaline Earth Metal 4.Noble gas, period 2 5.3 valance electrons, period 3 6.6 valance electrons, 3 energy shells 7.1 energy shell, 2 valance electrons 8.Row 4, Carbon Family

2 What is the periodic table? compact way of organizing elements contains a lot of information allows us to make predictions about behaviour and properties of elements Elements

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4 Periodic Law increasing atomic numberThere is a periodic repetition of chemical and physical properties of elements when arranged by increasing atomic number

5 Classifying the Elements metals75% of elements are metals non-metals metalloidsRemaining elements: non-metals & metalloids (semi-metals) Staircase:Staircase: –dividing line between metals & nonmetals –elements to left are metals –elements to right are non-metals

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7 Properties of Metals Malleable – flattened into sheets Ductile – drawn into wires & tubes have Luster Good Conductors of heat & electricity Solid at room temperature (except Hg) “Metals are losers”Metals lose electrons & form positive ions “Metals are losers”

8 So…metals don’t want electrons, they want to get rid of them 2-8-12-8

9 Hg LIQUID SOLIDS METALS MOST REACTIVE METAL (MOST METALLIC) = BEST LOSER

10 Properties of Nonmetals generally gases or solids (except Br 2 ) solids are Brittle solids are Dull poor conductors of heat & electricity “Nonmetals are winners”Nonmetals gain electrons & form negative ions “Nonmetals are winners”

11 So…nonmetals love electrons, they want to take electrons 2-6 2-8

12 Hg LIQUID SOLIDS METALS MOST REACTIVE METAL (MOST METALLIC) = BEST LOSER Br NONMETALS MOST REACTIVE NONMETAL Non-reactive – they have all 8 valance electrons

13 Most elements are solid at room temperature Liquids (only 2 at room temp.) –Br 2 (non-metal) and Hg (metal) GASES –Elements that are gases at STP are… Diatomics: They don’t like to be alone so they always pair up! H 2, N 2, O 2, F 2, Cl 2 –Monatomics: noble gases He, Ne, Ar, Kr, Xe, Rn

14 Hg LIQUID SOLIDS METALS MOST REACTIVE METAL (MOST METALLIC) = BEST LOSER Br NONMETALS MOST REACTIVE NONMETAL Non-reactive – they have all 8 valance electrons GASSES H NOF Cl He Ne Ar Kr Xe Rn

15 Properties of Metalloids Each metalloid has some metallic and some nonmetallic properties –Example:Si shiny like metal but brittle like nonmetal


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