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