1. chemistry

2.  For cations ◦ Keeps its elemental name ◦ Examples:Na + – sodium ion Al 3+ – aluminum ion  For anions ◦ Change the ending of the elemental name to -ide ◦ Examples:Cl is chlorine Cl – is chloride ion S is sulfur S 2– is sulfide ion

3.  Metal + Nonmetal  Name Cation first, then anion  CaCl 2 : Calcium chloride  MgO: Magnesium oxide

4. A. Barium iodide B. Baride iodine C. Barium iodine D. Baride iodide

5. A. Calcium bromine B. Carbon bromine C. Calcium bromide D. Carbon bromine

6.  If Polyatomic is Cation, then list name & add anion name to the end ◦ Ex) (NH 4 )Cl: Ammonium chloride  If polyatomic is anion, then name cation and list polyatomic name ◦ Ex) Mg (NO 3 ) 2 Magnesium nitrate

7.  Look at handout for more info

8. A. Sodium nitrate B. Sodium nitrite C. Sodium nitrogen oxide

9. A. Ca 2 (PO 4 ) 3 B. Ca 3 (PO 4 ) 2

10.  barium fluoride  aluminum bromide  strontium phosphate

12.  Some transition metals can have multiple charges ◦ A roman numeral is used to indicate charge  Ex) Chromium can be +2 (II) or +3 (II) ◦ Chromium (II) Sulfide = Cr +2 & S -2 = CrS ◦ Chromium (III) Sulfide = Cr +3 & S -2 = Cr 2 S 3

14.  Prefix System (binary compounds) 1.Least electronegative atom comes first. 2.Add prefixes to indicate # of atoms. Omit mono- prefix on the FIRST element. 3.Mono- is OPTIONAL on the SECOND element 4.Change the ending of the second element to -ide.

15. PREFIX mono- di- tri- tetra- penta- hexa- hepta- octa- nona- deca- NUMBER 1 2 3 4 5 6 7 8 9 10

16. CCl 4 N 2 O SF 6 carbon tetrachloride dinitrogen monoxide sulfur hexafluoride

17. arsenic trichloride dinitrogen pentoxide tetraphosphorus decoxide AsCl 3 N 2 O 5 P 4 O 10