- The TX PACT 740 covers five domains across 125 selected-response questions in 3 hours 45 minutes of testing time.
- Energy and Chemical Bonding and Chemical Reactions each carry 23%, together representing 46% of the exam.
- Nature of Science, Matter and Atomic Structure, and Stoichiometry and Solutions each account for 18%.
- A periodic table, constants/formulas page, and on-screen scientific calculator are provided during testing.
Exam Overview: Format, Fee, and Timing
Before breaking down the content areas, it helps to understand the container they live in. The TX PACT: Chemistry: Grades 7-12 (740) is a Texas Education Agency Pre-Admission Content Test, delivered as a computer-administered test through Pearson Evaluation Systems at sites across Texas and nationwide. The exam fee is $106, and your total appointment runs 4 hours: 15 minutes for the CAT tutorial and compliance agreement, followed by 3 hours and 45 minutes of actual testing time.
You'll answer 125 selected-response questions covering grades 7-12 chemistry content. Some of those items are unscored field-test questions used to evaluate future test forms - they look identical to scored items, so there's no way to identify or skip them, and they don't affect your final scaled score. That score needs to reach 240 to pass. For a deeper breakdown of registration mechanics and what the $106 fee does and doesn't include, see the TX PACT 740 certification cost guide.
The Five TX PACT 740 Domains
The exam framework organizes grades 7-12 chemistry content into five domains, which are further broken into 17 competencies. Each competency describes specific skills and knowledge a beginning chemistry teacher is expected to demonstrate. Here's how the five domains break down.
Domain 1: Nature of Science (18%)
Candidates must understand how scientific knowledge is generated, tested, and revised, including experimental design, data analysis, laboratory safety, and the role of measurement and error in chemistry investigations.
- Scientific method application and controlled variables
- Lab safety protocols and equipment use
- Data interpretation, graphing, and significant figures
Domain 2: Matter and Atomic Structure (18%)
This domain tests foundational content: atomic theory, periodic trends, electron configuration, and the classification of matter that underlies everything else on the exam.
- Atomic models and subatomic particle behavior
- Periodic table organization and periodic trends
- States of matter, phase changes, and classification of substances
Domain 3: Energy and Chemical Bonding (23%)
One of the two heaviest domains. It covers thermodynamics and calorimetry, chemical bonding, intermolecular forces, IUPAC nomenclature, and molecular geometry - a broad mix of physical and structural chemistry.
- Thermodynamics, calorimetry, and heat transfer calculations
- Ionic, covalent, and metallic bonding; intermolecular forces
- IUPAC nomenclature and predicting molecular geometry
Domain 4: Chemical Reactions (23%)
The other heaviest domain. It focuses on how and why reactions occur, spanning reaction types, kinetics, equilibrium, acid-base chemistry, and electrochemistry.
- Reaction types, balancing equations, and reaction rates
- Equilibrium and Le Chatelier's principle
- Acid-base chemistry, titration, and oxidation-reduction/electrochemistry
Domain 5: Stoichiometry and Solutions (18%)
This domain tests quantitative reasoning: mole conversions, limiting reactants, and solution chemistry, including concentration and colligative properties.
- Mole ratios, molar mass, and stoichiometric conversions
- Limiting reactants and percent yield
- Solution concentration, molarity, and colligative properties
Why Two Domains Carry Nearly Half the Exam
Energy and Chemical Bonding and Chemical Reactions are each weighted at 23%, which means together they account for 46% of the entire exam - nearly half of every question you'll see. Between them, these two domains cover thermodynamics and calorimetry, bonding and intermolecular forces, IUPAC nomenclature and molecular geometry, reaction types and rates, equilibrium and Le Chatelier's principle, acid-base chemistry and titration, and oxidation-reduction and electrochemistry.
That's a lot of ground, and it's also the content most likely to include multi-step calculations rather than pure recall. If you're trying to gauge how challenging the exam will feel overall, the concentration of quantitative reasoning in these two domains is a major factor - the TX PACT 740 difficulty guide goes into more detail on what makes this exam demanding beyond just content breadth.
Key Takeaway
Because Energy and Chemical Bonding and Chemical Reactions combine for 46% of the exam, review sessions on titration curves, equilibrium shifts, electrochemistry, and thermodynamic calculations deserve more repetition than any other topic cluster.
Question Style and On-Screen Resources
All 125 questions on the TX PACT 740 are selected-response, meaning you're choosing from provided answer options rather than constructing a written response. That format rewards precision and pattern recognition over essay-style explanation, but it doesn't make the content easier - many questions require you to work through a calculation before you can even evaluate the answer choices.
To support that quantitative work, the exam provides three built-in resources directly on screen:
- A periodic table you can reference for atomic mass, atomic number, and element symbols
- A constants and formulas page covering the equations and values needed across domains
- An on-screen scientific calculator for computations during testing
Because these tools are provided rather than something you bring yourself, practice sessions are far more useful when you rehearse with the same type of resources - not a personal calculator or formula sheet you're used to at home. Getting comfortable navigating the on-screen tools before test day is one of the small logistical details covered in the TX PACT 740 study guide.
Who Takes the TX PACT 740 and Why
The PACT series exists for a specific purpose: candidates who already hold a bachelor's degree but have never been admitted to a Texas-approved educator preparation program (EPP) can use PACT scores to demonstrate content mastery for admission into that program. In other words, this isn't a stand-alone teaching certification exam - it's typically a gateway into an EPP that then leads toward classroom certification.
This distinction matters for retake planning. PACT exams taken for EPP admission purposes are not subject to the standard five-attempt limit that applies to certification tests. However, candidates who are testing through the intensive pre-service route are limited to five attempts, and a 30-day waiting period applies between attempts regardless of route. If you're unsure which path applies to your situation, review the eligibility details in the TX PACT 740 requirements guide before you register.
Building a Domain-Based Study Timeline
Generic study techniques only matter to the extent they're mapped onto this exam's actual weighting. Since Energy and Chemical Bonding and Chemical Reactions together make up 46% of the test, your plan should give them roughly double the time allotted to any single 18% domain.
Foundations First
- Review Nature of Science: experimental design, lab safety, data interpretation
- Review Matter and Atomic Structure: atomic models, periodic trends, states of matter
Energy and Chemical Bonding
- Practice thermodynamics and calorimetry calculations
- Drill bonding types, intermolecular forces, IUPAC nomenclature, and molecular geometry
Chemical Reactions
- Work through reaction types, rates, and equilibrium/Le Chatelier's principle problems
- Practice titration calculations and oxidation-reduction/electrochemistry scenarios
Stoichiometry, Solutions, and Full Review
- Reinforce mole conversions, limiting reactants, and solution concentration problems
- Take a full-length timed practice session using on-screen calculator and formula references
This structure isn't a rigid formula - it's simply a reflection of where the points live. For a condensed reference you can revisit during the final week before test day, the TX PACT 740 cheat sheet consolidates must-know facts across all five domains in one page.
Domain Weight Comparison Table
| Domain | Weight | Core Focus |
|---|---|---|
| Nature of Science | 18% | Scientific method, lab safety, data analysis |
| Matter and Atomic Structure | 18% | Atomic theory, periodic trends, classification of matter |
| Energy and Chemical Bonding | 23% | Thermodynamics, bonding, nomenclature, molecular geometry |
| Chemical Reactions | 23% | Reaction types/rates, equilibrium, acid-base, electrochemistry |
| Stoichiometry and Solutions | 18% | Mole conversions, limiting reactants, solution chemistry |
Notice that no single domain dominates the exam entirely - even the two heaviest domains only reach 23% individually. That spread means you can't skip any domain and expect to reach the 240 passing score comfortably; it just means your Energy and Chemical Bonding and Chemical Reactions review sessions should run longer and include more calculation practice than your Nature of Science or Matter and Atomic Structure sessions.
Key Takeaway
Treat all five domains as required, but allocate roughly 46% of your total review time to Energy and Chemical Bonding and Chemical Reactions combined, matching their share of the exam.
If you want a broader picture of how this exam fits into the bigger certification and career picture - including whether pursuing it makes sense for your situation - the TX PACT 740 ROI analysis and the TX PACT 740 salary guide cover those angles separately from the content domains discussed here. You can also start practicing with realistic domain-weighted questions on the TX PACT 740 practice test platform to see how your current knowledge lines up against the actual exam blueprint before you commit to a full study schedule.
Frequently Asked Questions
There are five domains: Nature of Science, Matter and Atomic Structure, Energy and Chemical Bonding, Chemical Reactions, and Stoichiometry and Solutions. Together they're divided into 17 competencies.
Energy and Chemical Bonding and Chemical Reactions each carry 23% weight, the highest of any domain, and together make up 46% of the exam. They deserve the most study time, though all five domains contribute to your final score.
No. The exam includes unscored field-test questions mixed in with scored items, and there's no way to distinguish them during testing. Only scored questions count toward your final scaled score.
Test takers get access to an on-screen periodic table, a constants and formulas page, and an on-screen scientific calculator. Personal calculators or reference sheets are not used.
The TX PACT 740 produces a single scaled score based on all scored questions combined, with 240 needed to pass. The domain percentages describe how many questions come from each content area, not separate pass/fail thresholds per domain.