sodium chloride
magnesium oxide
Due Sept 22
Thursday, September 22
Homework Quiz
You have 3 minutes
1b. What is a cation? give an example.
4g. Name this ion: HCO3­
6. Are these compounds ionic or molecular?
6a. CuCl2 6c. NH3
8d. Name K2SO4
The Lego Block Method
aluminum chloride
zinc nitride
hafnium oxide
Name the following
Mg(NO3)2 ‐ magnesium nitrate
Writing formulas with complex ions:
sodium hydroxide
Na2CO3 ‐ sodium carbonate
SrSiO3 ‐ strontium silicate
ammonium sulfide
Sc2(SO3)3 ‐ scandium sulfite
Fe(MnO4)2 ‐ iron (II) permanganate Write the following formulas
Calcium acetate ‐ Ca2+ CH3COO‐ Ca(CH3COO)2
Vanadium (IV) phosphate ‐ V4+ PO43‐ V3(PO4)4
Sodium dihydrogen phosphate ‐ Na+ H2PO4‐ NaH2PO4
Chromium (II) dichromate ‐ Cr2+ Cr2O72‐ CrCr2O7
aluminum carbonate
Multivalent metal ions
• metals that have more than one possible charge
• e.g. iron (II) oxide
Barium carbonate ‐ Ba2+ CO32‐ BaCO3
Strontium cyanide ‐ Sr2+ CN‐ Sr(CN)2
iron (III) oxide
Roman Numerals
Write the formulas for:
nickel (III) oxide
1
2
3
4
5
6
7
8
9
10
gold (I) chloride
gold (III) chloride
What about going backwards? Try on your own:
Name these compounds:
FeCl3 = iron (III) chloride
FeCl2
PbO2 = lead (IV) oxide
Ni2S3 = nickel (III) sulfide
PbO
CuF2 = copper (II) fluoride
Sb2S5
Cr2S3 = chromium (III) sulfide
Write formulas
sodium nitrate
sodium chlorate
magnesium sulfate
magnesium nitrate
potassium phosphate
calcium phosphate
iron (II) hydroxide
iron (III) hydroxide
Molecular Compounds
• have two (or more) NON­metals ... no metal atoms!
• naming rules are TOTALLY different than Ionic compounds
QUIZ TOMORROW ­ September 27
• 5 questions going from formula ­­> name
• 5 questions going from name ­­> formula • IONIC compounds only • regular, simple metals and non­metals
• metals that have more than one charge (like Iron (III))
• complex ions (like we did today)
Today:
Solubility
Naming Hydrates
Naming acids
Solubility = whether something will dissolve You DON'T have to memorize them!!
in water (or not)
Show it with a symbol after the chemical formula
(s) = Not soluble in water (s = ___________)
aqueous
(aq) = IS soluble in water (aq = __________)
sodium iodide
Hydrates
lead (IV) iodide
A hydrate is a molecule that contains some type of water.
copper (I) chloride
Copper (II) chloride
Name the following compounds
a.
FeCl3 · 6H2O – ___________________________________________________________
b.
CuSO4· 5H2O – ___________________________________________________________
Write the formulas for the following compounds
a.
barium chloride dihydrate – _________________________
b.
magnesium sulfate heptahydrate – ___________________
Acids
• have a hydrogen atom, and are AQUEOUS
Naming rules are:
e.g. HCl
H2SO3
H2SO4
HI