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