100+ Free Praxis Chemistry 5245 Practice Questions
Pass your Praxis Chemistry Content Knowledge (5245) exam on the first try — instant access, no signup required.
Loading questions...
Key Facts: Praxis Chemistry 5245 Exam
125
Selected-Response Questions
ETS Praxis 5245 Study Companion
2h 30m
Testing Time
ETS Praxis 5245 Study Companion
$130
Current Exam Fee
ETS Praxis Website
20%
Largest Domain (Reactions/Periodicity)
ETS Praxis 5245 Study Companion
For 2026, the Praxis 5245 is a 125-question, 2.5-hour computer-delivered selected-response exam priced at $130. The official study companion weights the exam across seven domains: Matter/Thermodynamics 14%, Atomic Structure 12%, Bonding/Structure 15%, Reactions/Periodicity 20%, Solutions/Acid-Base 15%, Scientific Inquiry 12%, and Procedures 12%.
About the Praxis Chemistry 5245 Exam
Praxis Chemistry Content Knowledge (5245) is the ETS subject assessment for secondary chemistry teacher certification. This practice bank covers all seven official domains: matter and energy, atomic structure, bonding, chemical reactions, solutions and acid-base chemistry, scientific inquiry, and laboratory procedures.
Questions
125 scored questions
Time Limit
2 hours 30 minutes
Passing Score
Varies by state (typically 135-160)
Exam Fee
$130 (ETS / Praxis)
Praxis Chemistry 5245 Exam Content Outline
Basic Principles of Matter and Energy; Thermodynamics
States of matter, phase transitions, kinetic molecular theory, gas laws, calorimetry, enthalpy, Hess's Law, and entropy.
Atomic and Nuclear Structure
Subatomic particles, electron configurations, quantum numbers, atomic spectra, periodic trends, radioactive decay, and nuclear reactions.
Nomenclature; Chemical Composition; Bonding and Structure
IUPAC naming, empirical and molecular formulas, ionic and covalent bonding, Lewis structures, VSEPR, hybridization, and intermolecular forces.
Chemical Reactions; Periodicity
Balancing equations, stoichiometry, reaction types, oxidation-reduction, reaction rates, equilibrium, Le Chatelier's principle, and periodic trends.
Solutions and Solubility; Acid-Base Chemistry
Concentration units, colligative properties, solubility, acid-base definitions, pH, buffers, titrations, and solubility product.
Scientific Inquiry and Social Perspectives of Science
Scientific method, experimental design, history of chemistry, science-technology-society connections, and chemistry in daily life.
Scientific Procedures and Techniques
Significant figures, unit conversions, laboratory equipment, safety procedures, separation techniques, error analysis, and data reporting.
How to Pass the Praxis Chemistry 5245 Exam
What You Need to Know
- Passing score: Varies by state (typically 135-160)
- Exam length: 125 questions
- Time limit: 2 hours 30 minutes
- Exam fee: $130
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
Praxis Chemistry 5245 Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the Praxis Chemistry exam (5245)?
The Praxis Chemistry Content Knowledge exam has 125 selected-response questions to be completed in 2 hours and 30 minutes.
What is a passing score on the Praxis Chemistry 5245 exam?
Passing scores are set by each state and typically range from 135 to 160. Check the ETS state requirements page for your specific state's passing score.
What content is covered on the Praxis Chemistry 5245 exam?
The exam covers seven content areas: Basic Principles of Matter and Energy (14%), Atomic and Nuclear Structure (12%), Nomenclature, Bonding, and Structure (15%), Chemical Reactions and Periodicity (20%), Solutions and Acid-Base Chemistry (15%), Scientific Inquiry (12%), and Scientific Procedures (12%).
Is the Praxis 5245 being replaced by the 5246?
Some states have transitioned to the Praxis Chemistry 5246. Check your state's current requirements on the ETS website, as requirements vary by state and may have changed.