property - describes the characteristics of an element or how it reacts, groups - what are the columns called in the Periodic Table?, periods - what are the rows called in the Periodic Table?, francium - most reactive element in Group 1, Group number is the same - how do we find out the number of electrons on the outer shell?, Period number is the same - how do we find out the number of electron shells in an atom?, Mendeleev - scientist who put the elements in order of atomic number, metals - elements that react to form positive ions, non-metals - elements that react to form negative ions, to the top and right - area of the Periodic table where non-metals are found, to the bottom and left - area of the Periodic table where metals are found, Noble Gases - name given to elements in Group 0, boiling point - this temperature increases going down Group 0, full outer electron shell - why are Noble Gases so stable?, Alkali Metals - name given to elements in Group 1, Halogens - name given to elements in Group 7, it increases - what happens to reactivity going down Group 1?, it decreases - what happens to reactivity going down Group 7?, 7 - number of electrons in halogens' outer shell, 1 - number of electrons in alkali metals' outer shell,

C5.1 Periodic Table

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