The Periodic Table The periodic table Arranging all

The Periodic Table

The periodic table Arranging all the elements by their atomic number and their properties led to the creation of… …the periodic table H Li He Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg ? ?

Short film about the history of the periodic table • https: //www. youtube. com/watch? v=0 RRVV 4 Diomg • https: //www. youtube. com/watch? v=f. Pnw. BITSmg. U

Missing elements! In this periodic table the symbols are replaced by atomic numbers. Some of the numbers are missing – where? Two more rows of elements fit here. 1 3 2 They are called the lanthanides and actinides. 4 11 12 5 6 7 8 9 10 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118

Columns of elements What are columns of elements called? 1 2 groups 3 4 5 6 7 0

Rows of elements What are rows of elements called? periods 1 2 3 4 5 6 7

Patterns: metals and non-metals Where are these different types of elements grouped together in the periodic table? l metals on the left and centre l non-metals on the right (except hydrogen) l semi-metals between metals and non-metals Semi-metals have some properties similar to metals and other properties similar to non-metals. Can you name a semi-metal element?

Patterns: physical state Where are these elements of different states grouped together in the periodic table? l solids on the left, in the centre and on the right l liquids in the middle and on the right l gases on the far right (except hydrogen) Only two elements are liquids at room temperature. What are they? l bromine and mercury

Patterns: reactivity of metals What happens to the reactivity of metals down a group? Which is the most reactive metal? increase in reactivity Li Be Al Na Mg K Ca Sc Ti V Cr Mn Fe Rb Sr Y Zr Nb Mo Tc Cs Ba La Hf Ta Fr Ra Ac Rf Db Sg W increase in reactivity Co Ni Cu Zn Ga Ru Rh Pd Ag Cd Re Os Ir Pt Bh Hs Mt Ds Au Hg Rg In Sn Tl Pb Bi Po

Patterns: reactivity of non-metals Group 0 elements are the most unreactive of all elements. Which is the most reactive non-metal/semi -metal? increase in reactivity He increase in reactivity For the remaining nonmetals and semi-metals, reactivity increases up a group and along a period from left to right. B C N O F Ne Si P S Cl Ar Ge As Se Br Kr Sb Te I Xe At Rn unreactive