By Ken Costello

+ _ battery compass Coil of wire + _ Whats an ion? Lets find out…

+ _ battery compass Coil of wire Copper Chloride + _ Switch is open. Nothing happening yet.

+ _ battery compass Coil of wire Copper Chloride If copper atoms are going to the negative side, what charge do they have? What about the chlorine atoms? + _

+ _ battery compass Coil of wire Copper Chloride Since the atoms wandered towards each side, lets call them IONS from the Greek word, ion, meaning wanderer. + _

+ _ Copper Chloride CuCl Also, since the positive side of a battery is called the anode (way up), well call ions that go towards it anions Since the negative side of a battery is called the cathode (way down), well call ions that go towards it cations. anode cathode + _

IA IIA IIIAVIAVAIVA VIIA VIIIA Naming compounds by taking a metal from groups 1A, 1B, or 1C, and combining with a non-metal.

Understanding how ions react to other elements will help in naming compounds or coming up with formulas for the compounds.

IA IIA IIIAVIAVAIVA e - 3p + 4p + LiBe B 5p + 6p + C VIIA VIIIA How do you know the charge?

IA IIA IIIAVIA VIIA VAIVA +4 VIIIA e - NOF 7p + 8p + 9p + 10p + Ne 8e - Na 11p +

IA IIA IIIAVIAVAIVA e - 4p + Be e - F 9p + VIIA VIIIA

IA IIA IIIAVIAVAIVA e - 4p + Be +2 2e - F 9p + 2e - F 9p + VIIA VIIIA

IA IIA IIIAVIAVAIVA Be +2 F F BeF 2 VIIA VIIIA Berylium Fluoride

For ionic compounds with a metal from group 1A, 2A, & 3A place the metal first and name it first. The non-metal is put last and named last. The number of metals or non-metals is depends on how many it takes to balance the charges IA IIA IIIAVIAVAIVA VIIA VIIIA

IA IIA IIIAVIAVAIVA Al +3 Cl Cl AlCl 3 Cl VIIA VIIIA Al +3 Cl Aluminum Chloride

IA IIA IIIAVIAVAIVA Fe +3 O -2 O Fe 2 O 3 O -2 VIIA VIIIA Fe +3 O -2 Fe +3 Fe OOO

The following two slides show how polyatomic ions would combine. This will help you with naming compounds that contain polyatomic ions.

IA IIA IIIAVIAVAIVA Zn +2 NO 3 NO 3 Zn(NO 3 ) 2 NO 3 VIIA VIIIA Zn +2 Zinc = +2 O N O O Zn O N O O

IA IIA IIIAVIAVAIVA Fe +3 SO 4 -2 SO 4 -2 Fe 2 (SO 4 ) 3 SO 4 -2 VIIA VIIIA Fe +3 Iron=+3 Now called Iron(III) sulfate Fe +3 SO 4 -2 O O S O O O O S O O Fe O O S O O