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100+ Free OAE Chemistry Practice Questions

Pass your Ohio Assessments for Educators Chemistry (009) exam on the first try — instant access, no signup required.

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Key Facts: OAE Chemistry Exam

009

Current OAE Chemistry Test Code

OAE assessments list

150

Multiple-Choice Questions

OAE Chemistry (009) test page

3h 45m

Testing Time

OAE Chemistry (009) test page

4h

Total Appointment Time

OAE Chemistry (009) test page

220

Passing Score

OAE Chemistry (009) test page

$109

Assessment Fee

OAE Chemistry (009) test page

23%

Largest Domains: Energy and Chemical Bonding; Chemical Reactions

OAE Chemistry (009) assessment framework

Not reported

Public Pass Rate

OAE/Pearson public pages reviewed

The current OAE Chemistry (009) test page lists 150 multiple-choice questions, 3 hours and 45 minutes of testing time inside a 4 hour appointment, a passing score of 220, a $109 assessment fee, and CBT delivery by appointment. The official Chemistry (009) framework weights Nature of Science at 18%, Matter and Atomic Structure at 18%, Energy and Chemical Bonding at 23%, Chemical Reactions at 23%, and Stoichiometry and Solutions at 18%.

Sample OAE Chemistry Practice Questions

Try these sample questions to test your OAE Chemistry exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A scientist observes that a new species of deep-sea fish produces bioluminescence. She hypothesizes that the light attracts prey. Which of the following would be the best next step in the scientific method?
A.Publish the hypothesis in a scientific journal
B.Design an experiment to test whether bioluminescent fish attract more prey than non-bioluminescent fish
C.Accept the hypothesis based on the observation
D.Reject the hypothesis because it cannot be tested in a laboratory
Explanation: The scientific method requires that hypotheses be tested through experimentation. The best next step is to design an experiment that compares prey attraction between bioluminescent and non-bioluminescent conditions, using controlled variables and measurable outcomes.
2Which of the following best describes the difference between a scientific law and a scientific theory?
A.A law is proven fact; a theory is just a guess
B.A law describes what happens; a theory explains why it happens
C.A theory becomes a law once enough evidence supports it
D.Laws apply to physics only; theories apply to chemistry
Explanation: A scientific law is a concise description of an observed pattern in nature (e.g., the law of conservation of mass describes that mass is conserved). A scientific theory is a well-substantiated explanation of why natural phenomena occur (e.g., atomic theory explains the behavior of matter). Theories do not become laws; they serve different purposes.
3A chemistry student performs an experiment and obtains the following measurements for the density of aluminum: 2.70, 2.68, 2.71, and 2.69 g/cm³. The accepted value is 2.70 g/cm³. These results are best described as:
A.Accurate but not precise
B.Precise but not accurate
C.Both accurate and precise
D.Neither accurate nor precise
Explanation: The measurements are close to each other (ranging from 2.68 to 2.71), indicating high precision. They are also close to the accepted value of 2.70, indicating high accuracy. When measurements are both tightly grouped and centered on the true value, they are both accurate and precise.
4Which of the following best describes the impact of the development of synthetic fertilizers (Haber-Bosch process) on society?
A.It decreased global food production by depleting soil nutrients
B.It enabled a dramatic increase in global food production, supporting population growth
C.It had no significant effect on agriculture or society
D.It primarily benefited pharmaceutical manufacturing rather than agriculture
Explanation: The Haber-Bosch process synthesizes ammonia from nitrogen and hydrogen gases, enabling mass production of nitrogen fertilizers. This revolutionized agriculture by dramatically increasing crop yields, which supported the rapid growth of the world's population in the 20th century. It is considered one of the most impactful chemical inventions in history.
5A researcher publishes a paper claiming that a new drug cures a disease. Another research group repeats the experiment but cannot replicate the results. What does this suggest about the original findings?
A.The original findings are conclusively proven wrong
B.The original findings should be accepted because they were published first
C.The inability to replicate raises doubt about the original findings and suggests further investigation is needed
D.Replication is unnecessary if the original study was properly designed
Explanation: Reproducibility is a cornerstone of the scientific method. If results cannot be replicated by independent researchers, this raises significant doubt about the original findings. It does not necessarily prove them wrong, but it indicates the need for further investigation into potential errors, confounding variables, or other methodological issues.
6Which statement best describes a key advantage of renewable energy sources over fossil fuels from a chemistry perspective?
A.Renewable energy sources produce more energy per unit mass than fossil fuels
B.Renewable energy sources do not involve any chemical reactions
C.Renewable energy sources produce little or no greenhouse gas emissions during operation
D.Renewable energy sources are available in unlimited quantities with no environmental impact
Explanation: The key advantage of most renewable energy sources (solar, wind, hydroelectric) is that they produce little or no CO₂ and other greenhouse gas emissions during operation. Fossil fuel combustion releases CO₂ and other pollutants, contributing to climate change and air quality problems.
7In which historical development did the concept of the atom undergo significant change?
A.Dalton proposed that atoms were indivisible solid spheres
B.Thomson discovered electrons and proposed the plum pudding model
C.Rutherford's gold foil experiment revealed the nuclear model with a dense positive core
D.All of the above represent significant changes in atomic theory
Explanation: All three represent major milestones in the evolution of atomic theory. Dalton (early 1800s) established the concept of indivisible atoms. Thomson (1897) discovered electrons and proposed atoms had internal structure. Rutherford (1911) showed atoms have a dense, positively charged nucleus. Each discovery fundamentally changed our understanding of atomic structure.
8What is the role of a control variable in an experiment?
A.It is the variable being measured as the outcome
B.It is deliberately changed by the experimenter
C.It is kept constant to ensure that only the independent variable affects the result
D.It is the hypothesis being tested
Explanation: Control variables (also called controlled or constant variables) are factors that are kept the same throughout the experiment. By holding these variables constant, the researcher ensures that any changes in the dependent variable can be attributed to the independent variable, not to other factors.
9A student collects data showing that adding more catalyst to a reaction increases the reaction rate. Which of the following is the best way to present this data?
A.A pie chart showing the percentage of catalyst used
B.A line graph with catalyst amount on the x-axis and reaction rate on the y-axis
C.A bar graph comparing the color of the solution at different catalyst amounts
D.A written paragraph describing each trial
Explanation: A line graph is the best way to display the relationship between two continuous quantitative variables (catalyst amount and reaction rate). The independent variable (catalyst amount) goes on the x-axis, and the dependent variable (reaction rate) goes on the y-axis, allowing trends to be easily visualized.
10Water purification in municipal water treatment plants typically involves which of the following chemical processes?
A.Nuclear fission to heat and sterilize the water
B.Chlorination or ozonation to disinfect the water by killing harmful microorganisms
C.Addition of strong acids to dissolve all impurities
D.Distillation of all municipal water supplies
Explanation: Municipal water treatment commonly uses chlorination (adding chlorine or chloramine) or ozonation to disinfect water by killing bacteria, viruses, and other pathogens. These are chemical oxidation processes that destroy microorganisms while keeping the water safe for consumption at the concentrations used.

About the OAE Chemistry Exam

The OAE Chemistry (009) assessment is the current Ohio Assessments for Educators chemistry content test for educator licensure candidates. The official framework covers nature of science, matter and atomic structure, energy and chemical bonding, chemical reactions, and stoichiometry and solutions.

Questions

150 scored questions

Time Limit

4h appointment (3h 45m testing)

Passing Score

220

Exam Fee

$109 (State Board of Education of Ohio / Pearson)

OAE Chemistry Exam Content Outline

18% of assessment score

Nature of Science

Scientific investigations, data collection and analysis, evidence for claims, laboratory safety, measurement standards, uncertainty, historical and contemporary scientific ideas, STEM connections, media evaluation, and social or ethical issues in chemistry.

18% of assessment score

Matter and Atomic Structure

Elements, compounds, mixtures, physical and chemical properties, physical, chemical, and nuclear changes, radioactive materials, atomic models, subatomic particles, energy levels, spectra, electron configurations, periodic trends, kinetic molecular theory, phase diagrams, and gas laws.

23% of assessment score

Energy and Chemical Bonding

Thermodynamic laws, spontaneity, heat versus temperature, calorimetry, bond enthalpy, enthalpy diagrams, energy changes in reactions, phase transitions, dissolving and dilution, IUPAC nomenclature, inorganic and organic structures, molecular geometry, isomers, chemical bonds, intermolecular forces, and structure-property relationships.

23% of assessment score

Chemical Reactions

Reaction types, reaction products, collision theory, rate factors, rate laws, equilibrium, Le Chatelier's principle, equilibrium constants, acid-base definitions, pH and pOH calculations, acid strength, buffers, titrations, redox equations, electrochemical and electrolytic cells, and electrochemistry applications.

18% of assessment score

Stoichiometry and Solutions

Mole calculations, molar mass, percent composition, empirical and molecular formulas, chemical notation, balanced equations, net ionic equations, stoichiometric calculations involving moles, mass, volume, and energy, limiting reactants, percent yield, solution concentration, solubility, solubility curves, solutions, colloids, suspensions, and colligative properties.

How to Pass the OAE Chemistry Exam

What You Need to Know

  • Passing score: 220
  • Exam length: 150 questions
  • Time limit: 4h appointment (3h 45m testing)
  • Exam fee: $109

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

OAE Chemistry Study Tips from Top Performers

1Use the official Chemistry (009) framework as the primary outline and study by competency rather than by textbook chapter alone.
2Give extra time to Energy and Chemical Bonding and Chemical Reactions because each is weighted at 23% of the assessment score.
3Practice calculations with units, significant figures, and formula setup; the exam provides reference materials, but it still expects fluent application.
4For reaction questions, identify the reaction type, write or interpret the balanced equation, and then connect coefficients to rate, equilibrium, acid-base, redox, or stoichiometric reasoning.
5For bonding and structure questions, connect electron behavior, molecular geometry, intermolecular forces, and solid type to observed properties.
6For lab and inquiry items, focus on variables, controls, uncertainty, safety, data displays, and whether a claim is supported by evidence.

Frequently Asked Questions

How many questions are on the OAE Chemistry exam?

The current OAE Chemistry (009) test page lists 150 multiple-choice questions. OAE notes that assessments may include questions being evaluated for future administrations that do not affect the score.

How long is the OAE Chemistry (009) appointment?

The official test page lists a 4 hour total appointment, including 15 minutes for the CBT tutorial and nondisclosure agreement and 3 hours and 45 minutes of testing time.

What score do I need to pass OAE Chemistry?

The current passing score for OAE Chemistry (009) is 220. OAE says passing status is based on performance across the assessment.

How much does OAE Chemistry cost?

The official OAE Chemistry (009) test page lists an assessment fee of $109. Optional official preparation products, such as the practice assessment and Right Start subscriptions, are separate purchases when available.

Which OAE Chemistry domains carry the most weight?

Energy and Chemical Bonding and Chemical Reactions are the largest domains in the official Chemistry (009) framework, each weighted at 23% of the assessment score.

What reference materials are provided for OAE Chemistry?

The OAE Chemistry test page says an on-screen scientific calculator, a formulas and constants page, and a periodic table are provided for the assessment.