1. Reviewing Chemistry Concepts 2
9 weeks exam review

2. Question 1
What units are used to describe the solubility of a substance in a given solution?
A amount of solute per amount of solvent
B grams of solvent
C grams of solute
D grams of solvent per gram of solute

3. Question 2
A sample of Element X is found tocontain 72.15% of isotope type 1 ( amu) and 27.85% of isotope type 2 ( amu). Calculate the average atomic mass.
F amu
G amu
H amu
J amu

4. Question 3
The properties of elements, according to periodic law, can be predicted by —
F the number of isotopes
G the solubility of the element
H the position on the periodic table
J the color of the element

5. Question 4
Based on information from the periodic table, which two elements will bond in ratio similar to that of lithium oxide? (2:1)
A magnesium and sulfur
B sodium and fluorine
C hydrogen and sulfur
D magnesium and oxygen

6. Question 5
Any substance that does NOT conduct electricity when in solution is called a(n) ?
A nonelectrolyte
B electrolyte
C conductor
D semiconductor

7. Question 6
F blue
G green
H yellow
J red

8. Question 7
Which of the following atoms would have the largest ionic radius?
A lithium
B sodium
C potassium
D cesium

9. Question 8
Which of the following is the best way to determine if an aqueous solution of sodium acetate (NaC2H3O2) is supersaturated?
A Add water to the solution.
B Measure the temperature of the NaC2H3O2.
C Filter all the NaC2H3O2 out of the solution.
D Add a crystal of NaC2H3O2 to the solution.

10. Question 9
How many grams of iron (III) chloride, FeCl3, should be added to a 100.0mL volumetric flask in order to prepare M FeCl3? (Answer with significant digits.)

11. Question 10 "An electron must occupy the lowest
available energy orbital" is stated by —
F the Aufbau Principle
G Hund's Rule
H the Pauli Exclusion Principle
J Bohr's Law