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Solutions Part 2 Test2
Test Description: Solutions Part 2 Test2
Instructions: Answer all questions to get your test result.
1) What type of molecules are usually electrolytes?
A
covalent molecules
B
large molecules
C
ionic molecules
D
small molecules
2) Which of the following is an electrolyte?
A
salt
B
glass
C
water
D
sugar
3) What is the definition of a nonelectrolyte?
A
When volume and temperature are constant, gas pressure increases as the number of molecules increases.
B
A substance whose water solution does NOT conduct a current
C
The inverse relationship between volume and the pressure of a gas.
D
The direct relationship between the pressure of a gas and its temperature in Kelvin
4) Which of the following is an example of a nonelectrolyte?
A
sucrose
B
chloric acid
C
salt
D
nitric acid
5) What are the three main ways of increasing the rate of dissolving?
A
emulsions, colloidals, solutions
B
not full, full, really full
C
increase temperature, agitation, increase surface area
D
unconcentrated, concentrated, superconcentrated
6) How can the speed of molecules be increased?
A
increasing the temperature
B
adding more solvent
C
decreasing the temperature
D
stirring the solution
7) What is Henrys Law?
A
The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution
B
The direct relationship between the pressure of a gas and its temperature in Kelvin.
C
When volume and temperature are constant, gas pressure increases as the number of molecules increases.
D
The inverse relationship between volume and the pressure of a gas.
8) Which of the following is an example of Henrys Law?
A
spray paint
B
carbonated beverage (soda)
C
bottled water
D
filling up a tire
9) What condition do deep sea divers suffer from if they try to surface too quickly
A
blurry vision
B
bends
C
migraines
D
cramps
10) Which of the following is a practical application of Henrys Law?
A
liquids
B
anesthesia
C
solids
D
gases
11) Solubility curves can show us information about what three types of solutions?
A
emulsions, colloidals, solutions
B
not full, full, really full
C
unconcentrated, concentrated, superconcentrated
D
unsaturated, saturated, supersaturated
12) What does a solubility curve show?
A
How much solute has dissolved at 30oC
B
The maximum amount of a substance that can be dissolved in 100g H20 at a given temperature
C
The amount of H2O needed to dissolve something
D
How concentrated a solution is
13) What is the definition of concentration?
A
A substance that dissolves in water to give a solution that does not conduct an electric current
B
A substance that dissolves in water to give a solution that conducts electric current
C
How much solution is dissolved in a given amount of solute
D
How much solute is dissolved in a given amount of solution
14) What is the definition of Molarity?
A
How much solution is dissolved in a given amount of solute
B
A substance that dissolves in water to give a solution that conducts electric current
C
How much solute is dissolved in a given amount of solution
D
The concentration of a solution
15) Describe concetrated and dilute in terms of moles and liters.
A
concetrated; more moles you have per milliliter; dilute: less moles per milliliter
B
concentrated: less moles you have per liter; dilute: more moles per liter
C
concentrated: less moles you have per milliliter; dilute: more moles per milliliter
D
concentrated: more moles you have per liter; dilute: less moles per liter
16) What is the molarity of a 0.30 L solution containing 0.20 moles of NaCl? If the molarity of that solution were 10 M, how many moles of NaCl would be present?
A
3.6 M; 5 moles
B
1 M; 2 moles
C
0.5 M; 1 mole
D
1.7 M; 3 moles
*select an answer for all questions
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