Groups

• Metals- form positive ions, have high melting and boiling points, conductors
• Non-metals- form negative ions, low melting and boiling points, insulator
• Transition metals are conductors and are dense, strong and shiny
• Group 1 Alkali Metals- soft, one electron on the outer shell, increasing reactivity and lower melting and boiling points as you go down
• Alkali metals form ionic compounds with non mentals
• When group 1 reacts with water it is very vigorous and produces hydrogen gas and metal hydroxides
• Group 1 reacts very vigorously when heated in chlorine gas to form white metal chloride salts
• Group 1 reacts with oxygen to form metal oxide.
• Group 7 Halogens- non metals, less reactive and higher melting and boiling points as you go down
• All group 7 elements react in similar ways because they have 7 electrons on the outer shells
• Halogens form ionic bonds with metals
• More reactive halogens will replace less reactive halogens
• Displacement reactions- occur when a metal reacts with a non-metal.
• Group 0 Noble gases- full outer shell, very stable, unreactive, non metals