+ _ battery compass Coil of wire + _ The compass will align with the coil of wire if current is flowing. Even though a battery is connected, no electrical current is flowing through the water.

+ _ battery compass Coil of wire Copper Chloride + _ Copper chloride is added to the water. It dissolves in the water.

+ _ 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. The ions that go towards the positive anode are called anions. 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.

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 next slides show polyatomic ions and how they will balance their charges when combining with a metal.

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