The Fundamentals of Engineering (FE) Chemical exam is the first major step toward earning your Professional Engineering (PE) license in chemical engineering. Whether you just graduated, are a few years into your career, or are an experienced process engineer who never took the exam, passing the FE Chemical opens the door to licensure, career advancement, and the ability to stamp and seal engineering work. This guide breaks down all 14 exam topics with their NCEES question weights, a tiered priority strategy, and a week-by-week 12-week study plan.

What Is the FE Chemical Exam and Why Does It Matter?

Administered by the National Council of Examiners for Engineering and Surveying (NCEES), the FE exam is a computer-based test designed to assess whether you have the foundational knowledge expected of an entry-level engineer. The FE Chemical exam consists of 110 questions answered over a 5 hour and 20 minute session, and it is offered year-round at Pearson VUE testing centers.

Passing the FE exam earns you the designation of Engineer Intern (EI) or Engineer in Training (EIT), depending on your state. From there, after accumulating the required years of professional experience (typically four years under a licensed PE), you become eligible to sit for the PE exam and earn full licensure.

Career Benefits of Passing the FE Exam

Complete Breakdown of All 14 Topic Areas

The FE Chemical exam draws from 14 distinct knowledge areas. The first four topics are shared across all FE disciplines, while topics 5 through 14 are specific to the chemical engineering exam. NCEES publishes an exam specification that assigns each topic an approximate number of questions out of 110. Below is each topic area with its estimated question count, approximate percentage weight, and what to expect.

Part 1: Shared Topics (All FE Disciplines)

1. Mathematics (6–9 questions, 6–9%)

Covers calculus (derivatives and integrals), differential equations, linear algebra, vector operations, and numerical methods. You will encounter problems involving partial derivatives, solving first- and second-order ordinary differential equations, matrix operations, Laplace transforms, and vector calculus. The NCEES FE Reference Handbook provides key formulas, but you need to know how to recognize which technique applies and execute it quickly. Mathematics underpins virtually every other topic on the chemical engineering exam, from reaction kinetics (differential equations) to process control (Laplace transforms). Subtopics include:

2. Probability and Statistics (4–6 questions, 4–6%)

Expect questions on probability distributions (normal, binomial, Poisson), measures of central tendency and dispersion, linear regression, hypothesis testing, and confidence intervals. Chemical engineers use statistics in quality control, process optimization, and experimental design. Most problems are straightforward if you understand when to apply each distribution and how to use the standard normal table in the reference handbook. Subtopics include:

3. Ethics and Professional Practice (4–6 questions, 4–6%)

Covers the NCEES Model Rules of Professional Conduct, ethical obligations, public safety considerations, and licensure requirements. These are conceptual rather than computational — you will be given scenarios and asked to identify the correct ethical course of action. Read the ethics section in the reference handbook carefully. This is one of the easiest topic areas to score well on with minimal study time, making it essentially free points on exam day. Subtopics include:

4. Engineering Economics (4–6 questions, 4–6%)

Topics include time value of money, present and future worth analysis, annual cost comparisons, benefit-cost analysis, rate of return, breakeven analysis, and depreciation methods. Master the standard factor formulas (P/F, F/P, A/P, A/F, P/A, F/A) and you will handle these efficiently. Chemical engineers routinely use economic analysis to compare process alternatives, evaluate capital projects, and justify equipment purchases. Subtopics include:

Part 2: Chemical Engineering–Specific Topics

5. Chemistry (7–11 questions, 7–11%)

A significant topic area that bridges general chemistry with chemical engineering applications. Covers inorganic chemistry (periodic table trends, bonding, molecular structure), organic chemistry (functional groups, nomenclature, basic reaction types), and physical chemistry (electrochemistry, kinetics fundamentals, solutions and colligative properties). Many questions require you to predict reaction products, balance redox equations, or apply concepts like Le Chatelier’s principle. Subtopics include:

6. Material and Energy Balances (7–11 questions, 7–11%)

The bread and butter of chemical engineering. This topic tests your ability to set up and solve material and energy balances on steady-state and transient systems, including systems with recycle, bypass, and purge streams. Expect problems involving multiple units, reactive systems with extent of reaction, combustion processes, and combined material and energy balances. This is the foundation on which chemical engineering thermodynamics, reaction engineering, and separation processes are built. Subtopics include:

7. Chemical Engineering Thermodynamics (7–11 questions, 7–11%)

The most conceptually demanding topic on the exam. Covers the first and second laws of thermodynamics, thermodynamic properties of pure substances and mixtures, equations of state (ideal gas, van der Waals, Peng-Robinson), phase equilibria (VLE, LLE), fugacity and activity coefficients, Raoult’s law and modified Raoult’s law, power cycles, refrigeration cycles, and chemical equilibrium. Subtopics include:

8. Fluid Mechanics (5–8 questions, 5–8%)

Covers fluid properties (density, viscosity, surface tension), fluid statics and manometry, Bernoulli’s equation, the continuity equation, pipe flow with friction losses (Darcy-Weisbach and Moody diagram), Reynolds number, flow through packed beds (Ergun equation), fluidization, and pump sizing. Subtopics include:

9. Heat Transfer (5–8 questions, 5–8%)

Covers conduction (Fourier’s law, thermal resistance, composite walls, cylinders), convection (Newton’s law of cooling, forced and natural convection correlations), radiation (Stefan-Boltzmann law, emissivity, view factors), and heat exchanger design and analysis (LMTD and effectiveness-NTU methods). Heat exchangers are central to chemical process engineering — from reboilers and condensers to reactor cooling systems. Subtopics include:

10. Mass Transfer and Separation (7–11 questions, 7–11%)

One of the defining topics of chemical engineering. Covers molecular diffusion (Fick’s law), convective mass transfer, interphase mass transfer, and the major separation operations: distillation, absorption, stripping, extraction, membrane separation, and drying. Expect problems on McCabe-Thiele diagrams, relative volatility, Fenske equation, Underwood equation, and equilibrium stage calculations. Subtopics include:

11. Chemical Reaction Engineering (7–11 questions, 7–11%)

Covers reactor design and analysis for batch reactors, continuous stirred-tank reactors (CSTRs), plug flow reactors (PFRs), and packed bed reactors (PBRs). Topics include rate laws, rate constants, reaction order, Arrhenius equation, conversion, selectivity, yield, and reactor sizing. You must be comfortable deriving design equations for ideal reactors, handling multiple reactions, and comparing CSTR and PFR performance. This topic is unique to chemical engineering and is a defining feature of the FE Chemical exam. Subtopics include:

12. Process Design and Economics (4–6 questions, 4–6%)

Covers process flow diagrams (PFDs), piping and instrumentation diagrams (P&IDs), equipment selection and sizing, cost estimation, profitability analysis, and process optimization. Chemical engineers are expected to read and interpret PFDs and P&IDs, apply scaling rules for equipment costs, and evaluate project profitability. Subtopics include:

13. Process Control (4–6 questions, 4–6%)

Covers feedback and feedforward control, transfer functions, block diagrams, stability analysis, PID controllers, and controller tuning. Process control is essential in chemical plants for maintaining product quality, safety, and efficiency. Expect questions on first-order and second-order system response, gain and time constants, and closed-loop stability. Subtopics include:

14. Safety, Health, and Environment (4–6 questions, 4–6%)

Covers hazard identification and analysis, process safety management, environmental regulations, and industrial hygiene. This topic is particularly relevant to chemical engineering because of the hazardous materials and high-energy processes involved. These questions tend to be conceptual and scenario-based. Subtopics include:

Which Topics Should You Prioritize?

Not all 14 topics carry equal weight. A strategic study plan focuses your limited time where it will earn the most points. Here is a three-tier priority system based on the NCEES question weights:

Tier 1: The “Big 4” High-Weight Topics (28–44 questions, ~25–40% of exam)

These four topics each carry 7–11 questions and together represent the core of the chemical engineering discipline. Master these first:

  1. Material and Energy Balances (7–11 questions) — the foundation of chemical engineering; weaknesses here cascade into every other ChemE topic
  2. Chemical Engineering Thermodynamics (7–11 questions) — the most conceptually demanding topic; rewards thorough preparation
  3. Mass Transfer and Separation (7–11 questions) — distillation, absorption, and extraction are uniquely ChemE and heavily tested
  4. Chemical Reaction Engineering (7–11 questions) — reactor design and kinetics are core to the discipline with well-defined problem types

Together, these four topics account for roughly 28 to 44 questions — approximately 25% to 40% of the entire exam. If you can consistently answer these correctly, you have built a commanding foundation for passing.

Tier 2: Medium-Weight Topics (24–38 questions, ~22–35% of exam)

After mastering the Big 4, focus on these topics which round out the technical core:

Combined with the Big 4, you now cover roughly 52 to 82 questions — approximately 47% to 75% of the exam.

Tier 3: Lower-Weight Topics (20–36 questions, ~18–33% of exam)

Finally, review these topics which each carry 4–6 questions:

While individually these topics carry fewer questions, together they still account for roughly 20–36 questions. Ethics, Engineering Economics, and Safety in particular offer a strong return on a small time investment because the questions tend to be conceptual or formula-driven with short solution paths.

Recommended 12-Week Study Timeline

Most successful candidates spend 200–350 hours preparing over 8 to 16 weeks. Here is a suggested 12-week plan tailored to the FE Chemical exam:

Study Tips for Exam Day Success

Final Thoughts

The FE Chemical Engineering exam is challenging, but it is absolutely passable with a structured study plan and consistent effort. Focus on the Big 4 high-weight topics first — Material and Energy Balances, Chemical Engineering Thermodynamics, Mass Transfer and Separation, and Chemical Reaction Engineering — then build outward to Chemistry, Mathematics, Fluid Mechanics, and Heat Transfer. Finish with the lower-weight topics that offer quick points with minimal study time. Become fluent with the reference handbook, take plenty of practice exams under realistic conditions, and manage your time carefully on exam day. Every hour you invest in preparation brings you one step closer to your PE license and the career opportunities that come with it.

Disclaimer: This guide is an independent educational resource and is not affiliated with, endorsed by, or sponsored by NCEES. The “Fundamentals of Engineering” exam, “FE” exam, and “NCEES” are trademarks of the National Council of Examiners for Engineering and Surveying. Exam specifications and content are subject to change; always refer to the official NCEES website for the most current information.