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Random Questions - $100
• What is the correct name for the ionic
compound, (NH4)2SO3
ANSWER
Random Questions - $200
• What are the conditions for STP-temperature and pressure?
ANSWER
Random Questions - $300
Predict AND name the missing product in
the following equation:
BaCl2 (aq) + Na2SO4 (aq)  _____ + 2 NaCl (aq)
• Formula =
• Name =
ANSWER
Random Questions - $400
• Which of the following compounds are ionic?
–
–
–
–
NaOH
CH4
NaCl
Al2O3
ANSWER
Random Questions - $500
• Which of the following polyatomic ions has the
correct charge?
– H2PO3 3– SO3 – C2H3O2 2– CrO4 2-
ANSWER
Calculations
- $100
• How many molecules are in one mole of
nitrogen gas?
ANSWER
Calculations
- $200
A sample of hydrogen gas has a volume of 20
liters at STP.
Calculate the mass of hydrogen gas present in
this gas sample.
ANSWER
Calculations
- $300
• Hydrofluoric acid, an aqueous solution containing
dissolved hydrogen fluoride, is used to etch glass
by reacting with the silica, SiO2, in the glass to
produce gaseous silicon tetrafluoride and liquid
water. The balanced equation is:
4HF (aq) + SiO2 (s)  SiF4 (g) + 2H2O (l)
• Calculate the mass of hydrogen fluoride needed
to react with 5.68g of silica.
ANSWER
Calculations
- $400
• Aluminum reacts with chlorine gas to form
aluminum chloride according to the
balanced equation:
2 Al (s) + 3 Cl2 (g)  AlCl3 (s)
In a certain experiment, 10.0 g of
aluminum is reacted with 35.0 g of chlorine
gas.
What is the limiting reactant and what
mass of aluminum chloride will be
produced?
ANSWER
Calculations
- $500
• A compound has been analyzed and has
been found to have the following
composition: copper 66.75%, phosphorus
10.84%, oxygen 22.41%. Determine the
empirical formula and name(s) of this
compound.
ANSWER
Bonding - $100
•
a)
b)
c)
d)
e)
Which of these elements has the highest
electronegativity?
Na
Rb
Ca
S
Cl
ANSWER
Bonding - $200
True or False? N2 is an example of a
covalent bond.
ANSWER
Bonding - $300
Which of the following bonds
would be the least polar yet still
be considered polar covalent?
Mg-O
C-O
O-O
Si-O
N-O
ANSWER
Bonding - $400
•
If atom X forms a diatomic molecule with
itself, the bond is…
a) Ionic
b) Polar covalent
c) Nonpolar covalent
ANSWER
Bonding - $500
• When a molecule has a center of positive
charge and a center of negative charge, it is
said to have a _______ ________.
ANSWER
Structures - $100
• Which of the following has only nonpolar
covalent bonds?
N2
CO
HI
CCl4
NaCl
ANSWER
Structures - $200
Which of the following has a double bond?
H2O
C2H2
C2H4
CN-
ANSWER
Structures - $300
Which of the following molecules have a
linear shape (choose all that apply)
HBr
NO3H2O
SF4
KrCl4
ANSWER
Structures - $400
• The Lewis Structure for which of the
following contains the greatest number
of lone pairs of electrons?
CH4
HF
F2
H2O
H2
ANSWER
Definitions - $100
• When ions are dissolved in water it is said to
be a(n) ___________ solution
ANSWER
Definitions - $200
• When electrons fill atomic orbitals, there is a
maximum of 2 electrons per orbital. These
electrons must have ____________ spins
according to the ________ _________
Principle.
* What this means is that no 2 electrons in an
atom can have the same 4 quantum numbers.
ANSWER
Definitions - $300
• Classify each of the following as either a
chemical change or physical change:
– You make scrambled eggs
– You step on and crush a piece of chalk
– You light a candle
– Steam from your shower condenses on the
mirror
ANSWER
Definitions - $400
• ______ is how close you are the correct
measurement whereas _____ is how
consistent you are in your measurement.
ANSWER
Definitions - $500
• Protons and neutrons are held together in
the nucleus by
– Electromagnetic repulsion
– Nuclear charge
– Electrostatic attraction
– Nuclear “strong” force
ANSWER
****Answers****
Random Questions - $100
(NH4)2SO3 = Ammonium Sulfite
DONE
Random Questions - $200
0 degrees Celsius (273 degrees kelvin)
and 1 atmosphere
DONE
Random Questions - $300
BaSO4
Barium Sulfate
DONE
Random Questions - $400
– NaOH
– NaCl
– Al2O3
DONE
Random Questions - $500
•
CrO4
2-
DONE
Calculations
- $100
1.204 x 1024
DONE
Calculations
- $200
1.80 g H2
DONE
Calculations
- $300
7.56 g HF
DONE
Calculations
- $400
21.9 g AlCl3 can be produced when all of
the Cl2 is reacted, since chlorine gas is the
LR.
DONE
Calculations
- $500
Cu3PO4
Copper (I) Phosphate
Cuprous Phosphate
DONE
Bonding - $100
• B: I (iodine)
DONE
Bonding - $200
• A: TRUE
DONE
Bonding - $300
• E: N-O
DONE
Bonding - $400
C:
Nonpolar Covalent
Bond (occurs between
like atoms)
DONE
Bonding - $500
• When a molecule has a center of
positive charge and a center of
negative charge, it is said to have a
DIPOLE MOMENT.
DONE
Structures - $100
N2
DONE
Structures - $200
C2H4
DONE
Structures - $300
HBr
DONE
Structures - $400
F2
DONE
Structures - $500
2
DONE
Definitions - $100
• Aqueous solution
DONE
Definitions - $200
• Opposite spins ()
• Pauli Exclusion Principle
DONE
Definitions - $300
– You make scrambled eggs = chemical
– You step on and crush a piece of chalk =
physical
– You light a candle = chemical
– Steam from your shower condenses on the
mirror = physical
DONE
Definitions - $400
Accurate ; precise
DONE
Definitions - $500
The nuclear force (or nuclear “strong”
force) is the force between two or more
nucleons. It is responsible for binding of
protons and neutrons into atomic nuclei.
DONE
CONTINUE
CONTINUE