Physical Science ~ The periodic Table of Elements
PHYSICAL SCIENCE ~ THE PERIODIC TABLE OF ELEMENTS
CH 05 - notes
Periodic table of elements John NewlandsJ.W. Dobereinergrouped elements in arranged elements in “triads” according to groups of “eights” according to their their similar properties properties.
1829
1864
Lothar Meyerarranged elements according to atomic weight
1870
Periodic table of elements
Dmitri Mendeleev- Russian scientist published the 1st table of elements in 1869 ( ~ 63 elements) He arranged the elements according to increasing atomic weight AND their properties- Left gaps for undiscovered elements. Known as the “Father of the Periodic Table of Elements” Henry Mosley(1913) – arranged the table according to the atomic number. Today it is arranged according to increasing atomic number
Periodic Law- The chemical and physical properties of the elements will repeat themselves in a predictable way when the elements are arranged according to increasing atomic number http://ed.ted.com/lessons/the-genius-of-mendeleev-speriodic-table-lou-serico
Periodic Table of Elements
Vertical columns: groups or families Horizontal rows: periods Elements in the same group have similar chemical and physical properties Because the elements in a group have the same number of valence electrons Properties dissimilar left to right across a period Elements in a period – their valence electrons found on the same energy level
Title your chart as: Three categories or classes of elements
METALS NON-METALS METALLOIDS
METALS Where are they found: left of the bold zig zag line Physical Properties – solid at room temperature(EXCEPT ONE), shiny, good conductors, high density, ductile-made into thin wires, malleable – can be hammered without breaking
Chemical properties –reactive, want to lose their valence electrons
What kind of metals and where?
Group 1 – alkali metals- (NOT Hydrogen) soft, shiny, reacts violently with water- found in nature in compounds– not alone Alkali Metals: Explosive reactions Group 2 – alkaline earth metals- harder, more dense, stronger, higher melting point than GR1 metals, less reactive than alkali metals https://www.youtube.com/watch?v=T7K4Qi5PiFg Groups 3-12 – Transition metals- less reactive than GR1 and 2 metals, harder, more dense, higher melting points than G1 & G2- complex electron arrangements. Lanthanides and Actinides- kicked off the island- periods 6 and 7 http://www.ptable.com/
NON-METALS Where are they found: to the right of the zig zag line Physical Properties – no luster, bad conductors, low density— brittle, solids and gases at room temperature- only one liquid at room temperature CHEMICAL PROPERTIES – reactive, gain electrons to be stable Gr 17: Halogens/halides- salt forming, most reactive non-metals https://www.youtube.com/watch?v=PfDPVHMIL8c Gr18: Noble gases - stable, inert, un-reactive https://www.youtube.com/watch?v=jdzBRmLsUM8
Metalloids AKA: semi conductors Where are they found: straddling the zig zag line B, Si, Ge, Sb, As, Te properties of metals and non-metals Physical Properties: Brittle, some shiny, some dull, all solids at room temperature, sort of-conduct heat and electricity Chemical Properties - give or share valence electrons
https://www.youtube.com/watch?v=LodNHIS4Wfs
Ferocious Elements- Teaching Channel.Org- 14 min https://www.teachingchannel.org/vi deos/periodic-table
CH 05 - notes
Periodic table of elements John NewlandsJ.W. Dobereinergrouped elements in arranged elements in “triads” according to groups of “eights” according to their their similar properties properties.
1829
1864
Lothar Meyerarranged elements according to atomic weight
1870
Periodic table of elements
Dmitri Mendeleev- Russian scientist published the 1st table of elements in 1869 ( ~ 63 elements) He arranged the elements according to increasing atomic weight AND their properties- Left gaps for undiscovered elements. Known as the “Father of the Periodic Table of Elements” Henry Mosley(1913) – arranged the table according to the atomic number. Today it is arranged according to increasing atomic number
Periodic Law- The chemical and physical properties of the elements will repeat themselves in a predictable way when the elements are arranged according to increasing atomic number http://ed.ted.com/lessons/the-genius-of-mendeleev-speriodic-table-lou-serico
Periodic Table of Elements
Vertical columns: groups or families Horizontal rows: periods Elements in the same group have similar chemical and physical properties Because the elements in a group have the same number of valence electrons Properties dissimilar left to right across a period Elements in a period – their valence electrons found on the same energy level
Title your chart as: Three categories or classes of elements
METALS NON-METALS METALLOIDS
METALS Where are they found: left of the bold zig zag line Physical Properties – solid at room temperature(EXCEPT ONE), shiny, good conductors, high density, ductile-made into thin wires, malleable – can be hammered without breaking
Chemical properties –reactive, want to lose their valence electrons
What kind of metals and where?
Group 1 – alkali metals- (NOT Hydrogen) soft, shiny, reacts violently with water- found in nature in compounds– not alone Alkali Metals: Explosive reactions Group 2 – alkaline earth metals- harder, more dense, stronger, higher melting point than GR1 metals, less reactive than alkali metals https://www.youtube.com/watch?v=T7K4Qi5PiFg Groups 3-12 – Transition metals- less reactive than GR1 and 2 metals, harder, more dense, higher melting points than G1 & G2- complex electron arrangements. Lanthanides and Actinides- kicked off the island- periods 6 and 7 http://www.ptable.com/
NON-METALS Where are they found: to the right of the zig zag line Physical Properties – no luster, bad conductors, low density— brittle, solids and gases at room temperature- only one liquid at room temperature CHEMICAL PROPERTIES – reactive, gain electrons to be stable Gr 17: Halogens/halides- salt forming, most reactive non-metals https://www.youtube.com/watch?v=PfDPVHMIL8c Gr18: Noble gases - stable, inert, un-reactive https://www.youtube.com/watch?v=jdzBRmLsUM8
Metalloids AKA: semi conductors Where are they found: straddling the zig zag line B, Si, Ge, Sb, As, Te properties of metals and non-metals Physical Properties: Brittle, some shiny, some dull, all solids at room temperature, sort of-conduct heat and electricity Chemical Properties - give or share valence electrons
https://www.youtube.com/watch?v=LodNHIS4Wfs
Ferocious Elements- Teaching Channel.Org- 14 min https://www.teachingchannel.org/vi deos/periodic-table
