Award-Winning College Chemistry Tutors
serving Portland, OR

Organic reaction mechanisms, thermodynamics, and kinetics all demand a different kind of thinking than general chemistry, and that transition catches a lot of college students off guard. Rohan completed a chemistry minor at Oregon while immersed in biology coursework, so he understands how to bridge the conceptual gap between memorizing functional groups and actually predicting how molecules behave. He's rated 5.0 by students for making that leap manageable.

Most college chemistry struggles Channing sees trace back to math gaps hiding underneath the science — a shaky grasp of logarithms derailing pH calculations, or algebra mistakes disguised as conceptual confusion during equilibrium problems. With a deep math background spanning calculus through statistics and experience teaching high school chemistry, he pinpoints whether a student is stuck on the chemistry itself or on the quantitative machinery driving it, then fixes the actual weak spot.

As a passionate educator with a Doctorate in Biochemistry, Biophysics, and Structural Biology from the University of California, Berkeley, I bring over 25 years of dedicated tutoring and classroom experience to the table. My expertise spans subjects such as Algebra, Chemistry (including Organic and General Chemistry), and Statistics. I believe in fostering a supportive learning environment where students feel empowered to engage with complex concepts. By employing a hands-on approach, I connect theoretical ideas to real-world applications, making learning not only relevant but also enjoyable. My commitment to academic success drives me to inspire students to embrace their studies with confidence. Outside of teaching, I enjoy exploring scientific advancements and innovative educational methodologies, continually seeking ways to integrate my business acumen in biotech and education. - Charles Olea, MBA, PhD

I am passionate to help people learn about science, and have 35 years of real world experience and a Ph.D in physical chemistry, which seeks to explain physically observable phenomena in terms of atomic/molecular behavior.

Two mechanical engineering degrees mean Tammy spent years applying gen chem principles — gas laws in thermodynamic systems, reaction energetics in materials science, molecular bonding in metallurgy — long after most people closed their gen chem textbook. She tackles calculation-heavy topics like stoichiometry and calorimetry with an engineer's discipline around unit tracking and significant figures, catching the small errors that snowball into wrong answers on exams.

I am applying to medical schools to attend Fall 2016 and I like to play basketball, go backpacking and volunteer with youth in my free time.

Thermodynamics, reaction kinetics, and molecular orbital theory all demand a level of mathematical fluency that many students don't expect from a chemistry course. As a biomedical engineering major at Purdue, Sam regularly uses these principles in her own coursework and can explain the quantitative side of chemistry without losing sight of the underlying concepts.

Having TAed Chemistry, Biology, and Fluid Mechanics during her chemical and biological engineering degree at CU Boulder, Niki has explained gen chem concepts like reaction stoichiometry, thermodynamics, and equilibrium to students across multiple STEM disciplines — not just chemistry majors. That engineering lens means she teaches college chemistry with an eye toward how the math and the physical intuition need to work together, especially in calculation-heavy topics like enthalpy, gas laws, and solution concentration. Rated 4.7 by students.

HIV vaccine research in New York gave Karl hands-on experience with the biochemistry that underpins college chemistry — reaction energetics, solution behavior, and molecular interactions aren't abstract textbook topics when you've worked with them at the bench. His cellular and molecular biology degree means he tackles gen chem from the molecular level up, connecting ideas like electron configuration and bonding theory to the larger chemical behavior students are expected to predict on exams.

Neuroscience at Brown meant Crony couldn't just skim gen chem — courses in neurochemistry and cellular biology demanded real fluency with topics like electrochemistry, molecular interactions, and reaction energetics long after the introductory sequence ended. That background gives him a sharp sense of which college chemistry concepts actually need to be internalized versus merely memorized, especially for students heading into upper-level STEM work. Rated 4.6 by students.

Going from a Penn undergrad to medical school means Jessica sat through college chemistry twice — once as a prerequisite and again when biochemistry and pharmacology demanded she actually internalize concepts like reaction energetics, acid-base equilibria, and molecular interactions at a deeper level. That second pass gave her a clear sense of which gen chem topics students need to truly own versus merely survive, and she teaches accordingly. Rated 4.8 by students.

Working in a Yale research lab with tools like CRISPR-Cas9 means Matthew encounters gen chem principles — reaction kinetics, molecular interactions, buffer systems — in live experimental contexts, which sharpens how he explains them back at the introductory level. His biochemistry and molecular biology coursework built fluency with the bridge between general chemistry and its applications, so he can show students exactly why mastering something like equilibrium or thermochemistry pays off two courses down the road. Holds a 5.0 rating.

Going through med school means Amanda has seen what happens when gen chem concepts like acid-base equilibria and reaction thermodynamics aren't truly understood — they unravel in biochemistry, pharmacology, and every clinical science that follows. She teaches college chemistry by grounding each topic in the bigger picture of where it leads, using her biology degree and 4.2 GPA from Alabama to zero in on the quantitative reasoning — electron configurations, enthalpy calculations, equilibrium expressions — that students need to own rather than just survive.

Samantha studied Chemistry & Chemical Biology at Cornell with a food science concentration, so she's tackled everything from organic reaction mechanisms to thermodynamics and spectroscopy at the college level. She teaches tricky concepts like equilibrium constants, electrochemistry, and molecular orbital theory by building visual models that connect the math to what's physically happening at the molecular scale.

Two years as a pre-med molecular biology major at Princeton meant Laura took college-level chemistry seriously — stoichiometry, thermodynamics, equilibrium, and organic reaction mechanisms were part of her daily life before she pivoted to history. That scientific foundation, combined with a Montessori-rooted instinct to let students discover concepts through exploration rather than rote drill, makes her especially effective at breaking down abstract chemistry problems. Rated 5.0 by students.

Pre-med coursework at Duke forced Camille through the full gen chem gauntlet — stoichiometry, equilibrium, acid-base chemistry — while simultaneously juggling a humanities major, so she knows what it's like to learn dense quantitative material without the luxury of focusing on nothing else. That experience makes her especially effective with students who aren't pure STEM majors but still need to master college chemistry for their degree track. Rated 5.0 by students.

Studying chemistry at Harvard while preparing for Columbia Medical School means James has taken college chemistry far past the introductory level — he knows which early concepts like electron configurations, VSEPR theory, and reaction stoichiometry quietly become load-bearing walls for everything from organic mechanisms to biochemical pathways. He teaches gen chem by flagging those high-stakes fundamentals early, so students aren't blindsided when later courses assume fluency. Rated 4.9 by students.

First-year med students don't forget what tripped them up in gen chem — and Nishad, currently at Sidney Kimmel Medical College at Thomas Jefferson University, uses that recent memory to zero in on the conceptual breaks that derail students in topics like electron configuration, chemical bonding, and equilibrium. His premed background means he's taken college chemistry with the same stakes his students face, and he teaches it by connecting the molecular-level reasoning to the calculations so neither piece feels like it's floating on its own.

Between AP Chemistry, organic chemistry, and inorganic chemistry, Rebecca has covered college-level chemical concepts from multiple angles — but it's her biology background that shapes how she teaches gen chem topics like electron configurations, bonding, and solution chemistry, always tying them back to the biological systems where students will encounter them again. She's especially sharp at bridging the gap between memorizing periodic trends and actually using them to predict reactivity or molecular behavior. Rated 5.0 by students.

Being a Genetics Head Teaching Assistant at Brown while on the immunobiology track means Jessica has applied gen chem concepts like molecular interactions, reaction energetics, and acid-base chemistry in biological contexts where getting the fundamentals wrong isn't an option. She tackles college chemistry problems by pinpointing whether a student is stuck on the concept or the calculation — a distinction her years in math tutoring centers and science labs taught her to spot quickly. Rated 5.0 by students.

MIT's general chemistry sequence is notoriously fast — Vania not only survived it but tutored other students through it via the university's Seminar XL and Tutorial Services Room programs, where she got fluent in the exact places students stall out on topics like thermochemistry, equilibrium, and electron configuration. Her mechanical engineering training means she thinks about chemistry problems quantitatively, tracing how molecular-level behavior connects to the math rather than treating equations and concepts as separate tasks. Rated 5.0 by students.