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.