CHEMISTRY 101 READINESS EXAM SAMPLE TEST
QUESTIONS
-continued-
7. For a chemical reaction it is usually found that the reaction rate is faster at
higher temperature. The rate increases because
(a) the concentrations of reactants increase
(b) more reactants collide with energy equal to or greater than the
activation energy
(c) the concentrations of products increase
(d) the volume expands and there is more room for new compounds
(products) to form
8. Which answer is closest to the true value of the expression:
(9.1 x 104 )(1.1 x 10-5)(log10-13)(1000)
(a) 1.3
(b) 13000
(c) -13000
(d) 1.3 x 10-11
9. Which substance does not obey the Lewis octet rule?
(a) N2
(b) NO
10. For the reaction at equilibrium:
(c) CF4
(d) Ar
2 NO(g) + O2(g)
2NO2(g)
which change will increase the amount of NO2(g)?
(a) remove NO gas
(b) add NO gas
(c) add catalyst
(d) remove O2 gas
11. For the reaction
2C6H6(g) + 15O2(g)
12CO2(g) + 6H2O(g)
the expression for the equilibrium constant, K, is
(a)
[CO2] [H2O]
[C6H6] [O2]
(b)
[CO2]12 [H2O]6
[C6H6]2 [O2]15
(c)
[C6H6] [O2]
[CO2] [H2O]
(d)
READINESS EXAM PURPOSE
Chemistry Course Recommendation
The Chemistry 101 Readiness Exam acquaints students to the skills that are
needed to succeed in the general chemistry series and serves to identify those
students who are academically prepared for Chemistry 101. Some students
however, will need to improve their knowledge and will be recommended to
register for Chemistry 065.
NOTE: Chemistry Department advises Chemistry 101 Readiness Exam
results are valid for a one year period.
Students will be placed in a chemistry course, however the math prerequisite
must be cleared by a course completion or acceptable level of skill as
demonstrated in the Math Assessment Placement Process.
Prerequisite Enforcement
Chemistry and Math prerequisites at East Los Angeles College are
electronically enforced. Participation in the Chemistry 101 Readiness Exam
will recommend the appropriate chemistry course; however the math
prerequisites will also need to be cleared via appropriate satisfactory math
course completion or acceptable level of skill as demonstrated in the
Mathematics Assessment Placement Process. Below are the respective
recommended Chemistry courses and their prerequisites.
CHEMISTRY 065 - Introductory General Chemistry
Math Prerequisite: Satisfactory completion of Math 115 -or- placement into
Math 125 or higher, as demonstrated in the Math Assessment Placement
Process.
CHEMISTRY 101 - General Chemistry I
Chemistry Prerequisite: Satisfactory completion of Chemistry 065 -or-placement
into Chemistry 101, as demonstrated in the Chemistry 101 Readiness Exam.
Math Prerequisite: Satisfactory completion of Math 125 - or- placement into
Transferrable Level1 Math or higher, as demonstrated in the Math Assessment
Placement Process.
Students with Disabilities: If a student has a verified learning or physical
disability, the student may contact the Disabled Students Program &
Services at (323) 265-8787, or visit their office,
to determine eligibility for alternative test-taking arrangements.
[12CO2] [6H2O]
[2C6H6][15O2]
ANSWERS: 1(d); 2(a); 3(d); 4(c); 5(b); 6(c); 7(b); 8(c); 9(b); 10(b); 11(b)
Rev. 6/30/11
EAST LOS ANGELES COLLEGE
CHEMISTRY 101 READINESS EXAM GUIDE
Page 4
Rev. 6/30/11
Chem 101
CHEMISTRY 101 READINESS EXAM GUIDE
EAST LOS ANGELES COLLEGE
CHEMISTRY 101 READINESS EXAM SAMPLE TEST
QUESTIONS
-continued-
PREPARING FOR THE CHEMISTRY 101 READINESS EXAM
Sample Tests:
Each student should review the following Chemistry 101 Readiness Exam
sample test materials, as provided, for preparation prior to taking the exam.
Exam Selection/ Calendar Review:
The Chemistry 101 Readiness Exam is offered on a First-Come, First-Serve
basis only. Space is limited to the first 40 students. Review the Chemistry
101 Readiness Exam Schedule and attend a date & time of choice. Students
are encouraged to arrive at least a half-hour prior to any scheduled exam.
Date of Exam:
Plan on arriving at least a half-hour early, to the exam of choice. Main
Campus exams are held in Building E1-183. You must remember to bring
to the exam: proof of Student I.D. number, Photo I.D., two #2 pencils, and
the issued Chemistry 101 Readiness Exam Calendar. Students will have
access to a Periodic Table and a non-programmable calculator during the
exam. Students will be turned away upon achieving capacity, late arrivals,
and/or if the necessary documents are not provided. (Programmable
calculators will not be permitted during the exam.)
Chemistry 101 Readiness Exam Duration:
Allow a total of 1 hour for the Chemistry 101 Readiness Exam process.
Students will be dismissed upon their exam completion; however, exam
results will be made available 10 minutes after all examinees have finished.
It is the student’s responsibility to make sure that his/her exam is complete
prior to turning in their exam materials.
Chemistry 101 Readiness Exam Retest Policy:
Students will not be allowed to retest within one calendar year from test
date.
READINESS EXAM COMPONENT
Chemistry:
Chemistry 101 Readiness Exam is a 45-minute exam. It consists of
44 questions based on high school chemistry and high school
mathematics including: elements and their properties, chemical
formulas, concentrations of solutions, gases, oxidation numbers,
redox reactions, and the concepts of acids and bases.
Rev. 6/30/11
Page 2
Competency areas: Compounds and elements; states of matter; reactions of matter;
structure of matter; periodic properties; solutions; qualitative kinetics and
thermodynamics; lab skills, mathematical skills. A Periodic Table is provided with the
exam.
1. The correct formula for aluminum nitrate is
(a) Al3 N2
(b) Al3 (NO3)
(c) Al(NO2)3
(d) Al(NO3)3
2. A substance releases heat when it changes from
(a) liquid to solid
(b) solid to gas
(c) liquid to gas
(d) solid to liquid
3. Given the balanced equation:
2H2 (g) + O2 (g) → 2H2O(l)
How many grams of H2O are formed if 9.00 mol H2(g) reacts completely
with an excess of O2(g)? The molar mass of H2O is 18.0g/mol.
(a) 18.0g
(b) 36.0
(c) 81.0
(d) 162g
4. Which element has exactly five electrons in the highest principal energy
level (the outer shell)?
(a) Se
(b) Ba
(c) P
(d) Ge
5. Which element is a metal?
(a) Se (atomic number = 34)
(b) Co (atomic number= 27)
(c) C (atomic number= 6)
(d) Br (atomic number= 35)
6. What volume of 1.5M NaOH is needed to provide 0.75 mol of NaOH?
(a) 500 L
Rev. 6/30/11
(b) 5.0 L
(c) 500 mL
(d) 0.75 L
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