powerpoint from 10/27 fill in the information on your worksheets for this page using the following...
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Periods Periods = rows Atomic mass increases from left to right Number of protons increases from left to right Number of electrons in the outer shell of the atom increases from left to right Only hydrogen and helium are in the 1 st periodTRANSCRIPT
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PowerPoint from 10/27Fill in the information on your worksheets for this page using the
following PowerPoint. Honestly, this should be an easy assignment. You are getting points for copying down the information.
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Groups• Groups: or Family = columns• Share similar properties
• Numbers on top indicate what group it is• Noble gases-Group 18 (or 8A)• Halogens-Group 17 (or 7A)• Alkali metals-Group 1
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Periods• Periods = rows• Atomic mass increases from left to right• Number of protons increases from left to right• Number of electrons in the outer shell of the atom increases from left
to right• Only hydrogen and helium are in the 1st period
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Look at L14 –15 or L186 – L187
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Properties of MetalsPhysical Properties Chemical Properties
•Show Luster (shininess)•Good conductors of heat and electricity•High density•High melting point•Ductile (drawn into wires)•Malleable (hammered into thin sheets)
•Easily lose their electrons•Corrode easily: a gradual wearing away Examples of corrosion: Silver tarnishing rusting
Some react with air, water, and acids
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Properties of NonmetalsPhysical Properties Chemical Properties
•No Luster (dull appearance)•Poor conductors of heat and electricity• Low density• Low melting • Not Ductile • Not Malleable•Brittle - solids break easily
• Gain or share their Electrons•React with metals to form compounds•Bond with other non metals
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Properties of MetalloidsHave Properties of both metals and nonmetals
Physical Properties
•Can be shiny or dull•Semi- conductors for electricity•Solids•Brittle
• Bonds to form glass• Form alloys with metals
Chemical Properties