properties of the periodic table. periodic table: atomic number – the identity of an element row =...
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Metals, Non metal and metalloids – Summary Table MetalsMetalloidsNon metalsTRANSCRIPT
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Properties of the Periodic Table
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Periodic Table: Atomic number – the identity of an element Row = Period (Horizontal Rows #1-7) The atomic # increases as you go from left to right Atomic# = # protons (p) = # electrons for a neutral atom Properties change somewhat regularly as you go across
Column = Group = Family (Vertical Columns #1-18) Elements in a group have similar chemical properties
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Metals, Non metal and metalloids – Summary Table Metals Metalloids Non metals
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To Review: MetalsCommon Properties- shiny- good electrical/heat conductor- most are solids (room temperature)- malleable (can be hammered)- ductile (can be drawn into fine wire)- high tensile strength (resist breaking when pulled)Unique Properties- mercury (liquid at room temperature)- Group 1 metals can be cut with a knife- variety of colors
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To Review: Nonmetals
Common Properties- poor conductors of heat & electricity- not as common as metals Gases (Room Temperature) - nitrogen, oxygen, fluorine, & chlorine Liquids - bromine Solids - carbon, phosphorous, selenium, sulfur, iodine
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To Review: Metalloids
Common Properties- located between m & nm- share characteristics with m & nm- all solids at room temperature- less malleable than metals- not as brittle as nonmetals- semiconductors of electricity• Metalloid Elements - Boron (B), Antimony (Sb), Silicon (Si), Tellurium (Te), Germanium (Ge), Polonium (Po) - Arsenic (As) (debate-also metal)
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* Useful for living things in small amts, deadly in large quantities* Red stuff on the tips of matches is P.*78% of the earth's atmosphere made up of N2, unuseable form
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Oxygen is extremely reactive and combines with most other elements
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