CLEP Chemistry Exam

The CLEP: Chemistry examination was developed by the College Board as a way for individuals to demonstrate undergraduate-level knowledge and skills in this subject. Almost three thousand American colleges give credit to students who pass a CLEP exam; for this reason, many college-bound students take a CLEP exam in order to skip over introductory courses.

To succeed on the Chemistry exam, students will need to master the following topics and skills: recalling specific facts; indicating a strong understanding of information and familiarity with terminology; understanding concepts and converting information into equivalent terms; applying knowledge to unfamiliar situations; using mathematics to solve chemistry problems; making inferences from available data; integrating information to form conclusions; and recognizing unstated assumptions. The content of the exam is broken down as follows: structure of matter (20%); states of matter (19%); reaction types (12%); equations and stoichiometry (10%); equilibrium (7%); kinetics (4%); thermodynamics (5%); descriptive chemistry (14%); and experimental chemistry (9%). The Chemistry exam consists of 75 multiple-choice questions and must be completed within 90 minutes.

After the exam is complete, an unofficial score report will be made available. This score report will include the total score on a scale of 20 to 80; the American Council on Education recommends that students get credit if they score 50 or above. The total score is the raw score (number of correct answers) adjusted according to the difficulty of the exam version. The College Board does not distinguish between unanswered questions and questions answered incorrectly, so test-takers are encouraged to respond to every question. Some of the questions on the exam are pre-test questions, which are used to develop future versions of the exam and do not contribute to the raw score. It is impossible for test-takers to determine which questions are pre-test questions. The CLEP exams are administered in both computer and paper formats at over a thousand locations throughout the world To register for an exam, visit the College Board website.

CLEP Chemistry Practice Questions

1. Ionic crystals are more _____ than metals.

A: flexible
B: malleable
C: lustrous
D: shiny
E: brittle

2. What is another name for a neutral group of atoms held together by ionic bonds?
A: atom collective
B: ion
C: bond
D: molecule
E: formula

3. How many electrons are needed to fill up the first two main energy levels?
A: 1
B: 2
C: 10
D: 12
E: 18

4. Give the formula for nitrogen dioxide?
A: NO2
B: NiO2
C: N2O
D: NOO
E: N2O

5. Which set of elements is the most reactive group of nonmetals?
A: lanthanides
B: halogens
C: noble gases
D: rare-earth elements
E: carbon group

6. If 1mL of H2O is brought to its maximum density, what is its mass?
A: 10 g
B: 1 kg
C: 0.1 mg
D: 1 g
E: 100 g

7. In pure water, what is the concentration of H3O+?
A: 107 M
B: 103 M
C: 10-3M
D: 100 M
E: 10-7 M

8. In which of the following forms of matter are particles held together most strongly?
A: plasma
B: liquid
C: gas
D: lipid
E: solid

9. In which of the following conversion processes does a gas take the shape of its container?
A: expansion
B: diffusion
C: condensation
D: adhesion
E: effusion

10. In copper (II) chloride, what is the metallic ion?
A: Cu2+
B: C-
C: Co2+
D: Cu2-
E: C+

CLEP Chemistry Answer Key

1. E. Ionic crystals are bound together by an electrostatic charge.
2. D. A molecule must contain at least two atoms.
3. C. The first main energy level contains two electrons, and the second main energy level contains eight.
4. A. Note that dioxide indicates two atoms of oxygen.
5. B. Halogens are found in group 17 of the periodic table of the elements.
6. D. Water reaches its maximum density at approximately 4°C.
7. E. A mole of water is 18 g of liquid.
8. E. The close cohesion of molecules in a solid accounts for its density.
9. A. A gas will expand to fit whatever container it fills.
10. A. The abbreviation for copper is Cu.

CLEP Chemistry Test Breakdown