Thursday, January 29, 2009
Tuesday, January 27, 2009
3.08 - Covalent Compounds - 14:25
KEY TERMS: 2 or more non-metals
Prefixes: mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca
Labels:
chemistry,
covalent,
Papapodcasts,
prefixes,
science
3.04 - Polyatomic Ions - 14:06
KEY TERMS: 2 or more non-metals, Nick the Camel ate a Clam for Supper in Phoenix, "ate" ending
Underlined letter represents the atom
# of consonants = # of oxygens
# of vowels = # of negative charges associated with polyatomic
Ending is "ate" - except for ammonium ion and hydroxide ion
5 Step Cross over rule:
- Remember that polyatomic has brackets and the charge is written outside of the brackets
- remove brackets when the number outside of the brackets is a "1"javascript:void(0)
3.03 - Transition Metals -14:40
KEY TERMS: transition metals, Classical system, Stock system, Latin names, Roman numerals, cross over rule, reverse cross over rule
"ic" ending = higher charge
"ous"ending = lower charge
3.07 - Hydrate Compounds - 5:01
KEY CONCEPTS: Name compounds as usual. After naming the compound include the Greek prefix for the amount of waters present and use the name HYDRATE
5.04 - Double Displacement Reactions - 6:13
KEY CONCEPTS:
pairing metals and non-metals
metals switch places with the other metal in the reaction
Don't forget the 5 Step Cross Over Rule! Don't forget to balance the equation.
Labels:
balance equations,
double displacement,
metals,
non-metals
3.05 - Polyatomic Variations - 10:14
KEY CONCEPTS: Always refer to the original form of the polyatomic ion.
From the original form: _____ate ion, if:
i.) you gain an oxygen, name changes to per____ate ion.
ii.) lose 1 oxygen, name changes to _____ite ion.
iii.) lose 2 oxygens, name changes to hypo____ite ion.
**NOTE: the charge of the polyatomic NEVER changes
5.06 - Combustion Reactions - 8:15
KEY CONCEPTS:
-these reactions involve burning a hydrocarbon in the presence of oxygen. Hydrocarbons are compounds made by ONLY H and C atoms.
2 Types of Combustion Reactions:
i.) Complete Combustion (plenty of oxygen)
ii.) Incomplete Combustion (poor supply of oxygen)
Formulas for Combustion Reactions:
i.) Complete Combustion
C#H# + O2 --> CO2 + H2O
ii.) Incomplete Combustion Reactions:
C#H# + O2 --> CO2 + H2O + CO + C
**notice the difference in the Incomplete Combustion reactions
5.05 - Neutralization Reactions - 7:11
KEY CONCEPTS:
-special type of double displacement reaction
acid + base --> salt + water
REACTANTS
acids - either binary acids or oxy-acids (contain H)
bases - contain hydroxide (OH)
PRODUCTS
salt - ionic compound (ANY metal and non-metal)
water - we know what that is
Labels:
acids,
bases,
binary acids,
double displacement,
neutralization,
oxy-acids,
oxyacids
5.03 - Single DIsplacement Reactions - 18:52
KEY CONCEPTS:
metals switch with metals**
non-metals switch with non-metals
**look at the Activity Series if metal would switch with metal. If LONELY metal is higher in the Activity series than the metal paired with the non-metal can the metal switch places. If the LONELY metal is lower in the series, NO REACTION will take place.
Don't forget to balance equations! Don't forget the 5 Step Cross Over Rule
1.09 - Groups in the Periodic Table - 4:44
KEY TERMS: alkali metals, alkaline earth metals, halogens, noble gases, octet rule, cations, anions, metals lose electrons, non-metals gain electrons
Labels:
alkali metals,
alkaline earth metals,
anion,
cation,
halogens,
noble gases,
octet rule
Monday, January 26, 2009
1.08 - Atoms vs. Ions - 9:34
KEY TERMS:
cation = positively charged atoms (metals)
anion = negatively charged atoms (non-metals)
metals lose electrons, non-metals gain electrons
cation = positively charged atoms (metals)
anion = negatively charged atoms (non-metals)
metals lose electrons, non-metals gain electrons
Labels:
anion,
cation,
metals,
non-metals,
valence electrons
1.07b - Anatomy of the Atom - 10:01
KEY TERMS: valence electrons, nucleus of the atom, orbitals, shells, protons, neutrons, atomic number, atomic mass (round off), electrons, periods (horizontal rows), groups (vertical columns), period number=#of orbitals, atomic number=# of protons and electrons for neutral atoms
Labels:
groups,
neutrons,
periods,
protons,
valence electrons
1.07 - Anatomy of the Atom - 20:50
KEY TERMS: valence electrons, groups, periods, orbitals, shells, metals, non-metals
#of neutrons=atomic mass - atomic number
Group#=valence electrons
Period#=#of orbitals
#of neutrons=atomic mass - atomic number
Group#=valence electrons
Period#=#of orbitals
Labels:
groups,
metals,
non-metals,
orbitals,
periods,
shells,
valence electrons
Subscribe to:
Posts (Atom)