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Final Exam 3
Test Description: Final
Instructions: Answer all questions to get your test result.
1) What is Henry’s Law?
A
When volume and temperature are constant, gas pressure increases as the number of molecules increases.
B
The direct relationship between the pressure of a gas and its temperature in Kelvin
C
The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.
D
The inverse relationship between volume and the pressure of a gas.
2) What is an example of Henry’s Law?
A
bottled water
B
carbonated beverage (soda)
C
filling up a tire
D
spray paint
3) Liquids and solids exhibit practically no change in solubility with changes in
A
moles
B
temperature
C
volume
D
pressure
4) What are the three types of solutions for a solubility curve?
A
not full, full, really full
B
unconcentrated, concentrated, superconcentrated
C
emulsions, colloidals, solutions
D
unsaturated, saturated, supersaturated
5) What exactly does a solubility curve show?
A
The amount of H2O needed to dissolve something
B
How concentrated a solution is
C
The maximum amount of a substance that can be dissolved in 100g H20 at a given temperature
D
How much solute has dissolved at 30oC
6) Concentration is defined as
A
How much solute is dissolved in a given amount of solution
B
A substance that dissolves in water to give a solution that does not conduct an electric current
C
A substance that dissolves in water to give a solution that conducts electric current
D
How much solution is dissolved in a given amount of solute
7) The concentration of a solution is its
A
volume
B
molarity
C
molar volume
D
molar mass
8) How many moles of CuSO4 ⋅ 5H2O are in 0.8 L of a 0.6 M solution?
A
0.48 moles
B
1.3 moles
C
1.4 moles
D
0.20 moles
9) Which of the following is NOT a property of a base?
A
have a sour taste
B
feel slippery
C
conduct electric current
D
have a bitter taste
10) Calculate the pH of a solution with an H3O+ of 7.5 x 10-9 M
A
8.12
B
5.88
C
7.50
D
9.00
11) When does a precipitation reaction occur?
A
When you take a solute out of a solvent
B
When two metals swap non-metals
C
When you drop something into a substance
D
When you lose a bunch of electrons
12) Water makes both a hydrogen ion and a hydroxide ion. It is _____.
A
An acid
B
A base
C
Neutral
13) Which of the following is NOT a property of an acid?
A
react with bases to produce salt and water
B
have a sour taste
C
do NOT conduct electricity
D
some react with active metals
14) When a substance gives away an electron, that substance is ___________________.
A
Reduced
B
Precipitate
C
Initiated
D
Oxidized
15) When is the helpful acronym we use for remembering this?
A
ORE-ELG
B
LEO-GER
C
LEG-REO
D
GEO-LER
16) What is a precipitate?
A
Stuff you put in a solute
B
An insoluble solid formed during a double replacement reaction
C
Anything that helps a reaction
D
A gas
17) When an atom or molecule loses an electron this is called?
A
transition
B
reduction
C
oxidation
D
losition
18) Which of the following is not a type of energy?
A
potential
B
kinetic
C
acidic
D
chemical
19) What is chemical energy?
A
energy used when turning on a metal burner
B
energy from fire and explosions
C
potential energy stored in chemical bonds
D
energy used by a roller coaster going down hill
20) Which of the following is not a way energy is transferred?
A
concentration
B
conduction
C
convection
D
radiation
*select an answer for all questions
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