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Easy 100 Carbon dioxide Nitric acid Ammonia
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Easy Less Easy Medium Less
Medium Potpourri
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
500 500 500 500 500
Final
100 Easy Write the name of the
compounds: CO2
HNO3
NH3
Answer
Easy 100
Carbon dioxideNitric acidAmmonia
200 Easy
Determine bond type for C—CC—ClK—ClAnswer
Easy 200Use electronegativity (EN) differences and
element types:C—C = 2 nonmetals, same EN, nonpolar
covalentC– Cl = 2 nonmetals, v. different EN, polar
covalentK– Cl = metal + nonmetal = ionic
300 Easy
List 4 properties of ionic compounds
Answer
Easy 300
- Solids at room temp- Good electrolytes- Crystal lattice structure- Brittle- High melting point- dissociate in water
400 Easy
List 3 properties of molecular compounds
Answer
Easy 400
• Low mp solids, liquids or gases at RT
• Composed of nonmetals • Nonelectrolytes (except acids
and NH3)• Do not dissociate• Molecules are smallest units
500 Easy
Write names for the following:Al2(SO4)3
Sn(OH)4
NH4NO3
Answer
EASY 500
Aluminum sulfateTin (IV) hydroxideStannic hydroxideAmmonium nitrate
100 Less Easy
Calculate the energy associated with light having a frequency of 3.8 x 1013Hz
Answer
Less Easy 100
E = hνE = 6.626 x 10-34 Js X 3.8 x 1013Hz
E= 2.5 x 10-20 Joules
200 Less Easy Determine the wavelength of light with a frequency of
5.40 x 1015 Hz . Give answer in nanometers.
Answer
Less Easy 200
c=λν3.00 x 108m/s =λ 5.40 x 1015 Hz
λ =5.56 x 10-8 m x 1x109nm = 55.6 nm 1 m
300 Less Easy
What is the pH range of a base?Answer
Final Jeopardy
What is Mrs. Dorff’s favorite color?
Answer
Final Jeopardy Answer
Yellow!
Less Easy 300
Above 7
400 Less Easy What is the pH range of an
acid?
Answer
Less Easy 400
Below 7.
500 Less Easy
List 3 properties of acids other than pH.
Answer
Less Easy 500
1. Taste sour2. React with base to form a
salt + water3. Are electrolytes4. React with active metals to
produce hydrogen gas.
100 Medium
Describe the relationship between wavelength and
frequency of light.
Answer
Medium 100
As wavelength gets shorter, frequency gets higher.
200 Medium
Balance and add phases:
S + O2 SO3 (g)
Answer
200 Medium
2S(s) + 3O2 (g) 2SO3 (g)
300 Medium Choose reaction type: Synthesis, Single Replacement, Double Replacement, Decomposition, Combustion
2S(s) + 3O2 (g) 2SO3 (g)
Answer
Medium 300
Synthesis – one product from 2 or more reactants
400 Properties
Balance and State reaction type:
K + H2O KOH + H2
Answer
Medium 400
2K + 2H2O 2KOH + H2
Single Replacement: Element + Compound Yields Element Plus Compound
500 Medium
Write the double replacement reaction for:
nitric acid + sodium bicarbonate
Answer
Medium 500
HNO3 + NaHCO3 NaNO3 + H2O + CO2(g)
This reaction fizzes because H2CO3
spontaneously decomposes to H2O and CO2(g)
100 Less Medium
What visual evidence indicates which substance is the limiting reactant and which is the excess reactant?
Answer
Less Medium 100
After the reaction is done, limiting reactant should be
gonesome of excess reactant still
remains unused.
200 Less Medium Calculate the mass of Ba(OH)2
.2H2O needed to make 75.0 mL of 0.500 M solution.
Answer
Less Medium 200 Answer
Moles = MolarityX Liters= 0.500M X (0.0750 L) = 0.0375 mol
Mass = 0.0375 mol x 207.39g/mol= 7.78 g
300 Less Medium
What volume of 0.250 M HCl is needed to make 100.0mL of 0.0500M HCl?
Answer
Less Medium 300
McVc = MdVd
0.250M X = (0.0600M)(100.0mL)
X= 20.0 mL
400 Less Medium
What is the % carbon in ethanol (C2H5OH)?
Answer
Less Medium 400
Molar Mass = 46.08 g/mol
% C = 12.01 X 2 X 100 = 52.13%46.08
500 Less Medium
Give formulas of 3 different
ionic bases. Answer
Less Medium 500
Ionic Bases are metal hydroxides.
examples are:NaOH, LiOH, KOH, Ba(OH)2,
Fe(OH)3
100 Potpourri
Give the group and period #, group name and
properties of an element with valence configuration
4s23d104p6
Answer
Potpourri 100
period 4, group 18, noble gases,
unreactive, stable gas at room temp
200 Potpourri
A yellow solution is being tested using a Colorimeter.
You can use yellow, red, green or violet light. Explain your
wavelength choice.Answer
Answer for Potpourri 200
Best choices would be red or violet. Yellow light would be mostly reflected by a yellow solution. Green is close in
wavelength to yellow, so may also have poor absorbance.
300 PotpourriWhat is the % yield if theoretical yield for a
reaction is 25.0 g yet the reaction gives only 22.5 g of
product?Answer
Potpourri 30090% yield
400 PotpourriWrite the balanced
equation, with phases, for the reaction between nickel(II)nitrate and potassium sulfide.
Answer
Potpourri 400
Ni(NO3)2(aq) + K2S(aq) 2KNO3(aq) + NiS(s)
500 Potpourri
Why do chemical reactions occur in nature?
Answer
Potpourri 500
To increase stability.
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