dr. jim romano

Colligative properties are a classic high-yield topic on the DAT General Chemistry section. Understanding how particle number affects boiling point elevation, freezing point depression, and osmotic pressure is essential for solving many exam questions efficiently. In this video, Dr. Jim Romano...

Proteins are a major component of the Biology section on the DAT. In this lesson, Dr. Jim Romano reviews high-yield protein concepts including structure, function, enzymes, and amino acid properties that students are expected to understand for the exam. This material reflects over 35 years of...

Here is today’s DAT Question of the Day from Dr. Jim Romano. Cobalt(II) chloride hexahydrate is a red-pink, crystalline, water-soluble solid often used as a humidity indicator, in electroplating, and as a catalyst in organic synthesis. At infinite dilution, what is the Van’t Hoff factor...

In this short video, Prof. Blois explains probability concepts commonly tested on the DAT, focusing on understanding rather than shortcuts. This lesson follows the DAT Destroyer system created by Dr. Jim Romano, which emphasizes true mastery of concepts instead of pattern recognition. 📺 Watch...

Which atom has the smallest first ionization energy? (A) Mg (B) Al (C) Si (D) P (E) He Answer: B — Aluminum This is a classic DAT conceptual exception. Although first ionization energy generally increases from left to right across a period, there is a well-known anomaly between Group 2...

DAT questions often test application, not memorization. Today’s General Chemistry Question of the Day focuses on a molecular geometry application involving a coordination compound. Rather than asking for definitions, this question requires reasoning by analogy to determine how molecular...

Fungi consistently show up on the DAT Biology section, especially in questions related to classification, infections, and treatment strategies. In this short video, Dr. Jim Romano explains: • Yeasts vs. molds • Structural features like chitin • Common fungal pathogens • Antifungal treatment...

Sharing a short General Chemistry video for DAT and OAT students. In this lesson, Dr. Jim Romano explains how density problems are tested on the DAT and walks through the setup step by step. These questions are very common, especially for students early in their preparation, and mistakes...

Dr. Jim Romano explains enzymes and inhibitors — a high-yield DAT Biology topic that students frequently miss. Watch here: DAT Destroyer Resources: 2026 DAT Destroyer – High-Yield DAT Science Study Guide For free daily help, join the DAT Destroyer Facebook Study Group (Official DAT...

Answer is C Quick DAT Question of the Day (General Chemistry): Root mean square speed is given by: vrms=3RTMv_{rms} = \sqrt{\frac{3RT}{M}}vrms=M3RT Consider nitrogen and hydrogen at 35°C. At what temperature would they display equal RMS speed? (See the slides below for the full setup...

Thank you to the students who have trusted DAT Destroyer over the years. We will continue posting FREE high-yield DAT Biology, General Chemistry, and Organic Chemistry videos to help students prepare the right way. Official Channel: DAT Destroyer by Dr. Jim Romano For free daily help, join...

High-yield DAT General Chemistry concept. Antimony (Sb) has its outermost electrons in the 5p sublevel. For a p orbital, the azimuthal quantum number is: l = 1 Correct answer: B These quantum number questions are classic DAT test-day traps, and the fastest way to handle them is to...

High yield DAT General Chemistry practice question. Dr. Jim Romano walks through a classic thermochemistry specific heat setup using: ΔH = m c ΔT This is exactly the type of calculation students must be comfortable with on test day. Study smart, understand the formula, and do not...

Dr. Jim Romano explains a high-yield DAT Biology topic: pathogenic bacteria and what students need to know about infection and disease for the exam. Video: DAT Destroyer (Official): 2026 DAT Destroyer – High-Yield DAT Science Study Guide DAT and OAT Classes (Online and In-Person): 2026...

Chelsea Torres carries out an experiment to make aluminum chloride. 2Al + 3Cl₂ → 2AlCl₃ Approximately how many grams of halogen are required to completely consume 13.5 g of aluminum to form this compound? Correct answer: D (53.2 g) Slide 2 shows the full stoichiometry setup and unit...

High-yield DAT General Chemistry topic. In this video, Dr. Jim Romano explains heat of formation calculations step by step and shows how to correctly calculate reaction enthalpy using thermochemical data without falling into common DAT traps. This is a concept students often try to memorize...

In this video, Dr. Jim Romano explains the reticuloendothelial system and how it is tested on the DAT and OAT. The focus is on macrophages, phagocytosis, and immune system function—areas that commonly confuse students in DAT Biology. This explanation is useful for students using the DAT...

Let us consider the molecule shown above. After OH⁻ attacks in step 1, how many additional mechanism arrows are required to justify the formation of the product? a) 2 b) 3 c) 4 d) 5 e) 6 f) 7 g) 8 Answer: B Dr. Romano noted that this transformation is another classic “arrow problem,”...

Organic Chemistry Mechanism Arrows Explained (Video) | DAT Destroyer | OAT Destroyer Over the years I’ve seen a lot of students struggle with mechanism arrows in Organic Chemistry. It’s one of those areas where once you understand why electrons move, everything else starts to make sense —...

The Math Destroyer Giveaway has officially ended. Congratulations to our winner, u/Silent-Huckleberry28. We have contacted the winner, and their photo will be posted as soon as it is received. Thank you to everyone who participated and supported the Destroyer Team. For students preparing for...

If you're feeling stuck with self-study or overwhelmed by the amount of material, our live Zoom-based DAT & OAT classes might be the structure you need this fall. The course is taught by Dr. Jim Romano, creator of the DAT & OAT Destroyer books, and Professor Barengolts, a former NYU Chemistry...

If you’re struggling with Biology on the DAT (or haven’t taken it in a while), don’t go it alone. Dr. Romano — creator of the DAT Destroyer — offers free help every day inside our Facebook Study Group, including: ✅ Daily Bio questions along with Organic Chemistry, General Chemistry and Math...

Just wanted to share another incredible DAT score update from one of our recent DAT Destroyer Online Class students who used the DAT Destroyer and attended our live Zoom course. 📊 Scores: Organic Chemistry: 600 Biology: 590 TS: 560 AA: 520 And here’s what he had to say: 💥 Real prep...

Here’s a quick DAT Biology concept that shows up all the time — the difference between homodonts and heterodonts. 🦈 Dr. Jim Romano, creator of the DAT Destroyer, breaks it down in under a minute with his signature clarity and speed. 📘 Study Smart. Study Destroyer. 🧠 Trusted by pre-dental...

Jamielynn shared her honest experience using the DAT Destroyer to prep — and her results speak for themselves. If you're feeling overwhelmed, stuck, or not sure which resource to trust… this might help you see what's possible. 📘 Study Smart. Study Destroyer. 🧠 Trusted by pre-dental students...

Hey future dentists! 🦷 Check out this concise DAT tip on conjugate additions from Dr. Jim Romano (creator of the DAT Destroyer). This quick clip breaks down the mechanism and why it matters—crucial for mastering DAT orgo questions. 🎥 Watch it here: If this helped, show some love with a...

Hey future dentists! 🦷 Uncover the key steps in alcohol oxidation with this bite-sized DAT tip from Dr. Jim Romano (creator of the DAT Destroyer). This short clip highlights the differences between primary, secondary, and tertiary alcohol oxidations—a must-know for DAT orgo. 🎥 Watch it here...

Hey future dentists! 🦷 Check out this quick DAT tip on interpreting Carbon‑13 NMR spectra, courtesy of Dr. Jim Romano (creator of the DAT Destroyer). This short clip breaks down how to identify key carbon environments—an essential skill for tackling DAT organic questions. 🎥 Watch it here...

Hey future dentists! 🦷 Check out this quick DAT tip on the Michael Reaction from Dr. Jim Romano, creator of the DAT Destroyer. This short clip highlights a key mechanistic step students often overlook in DAT organic questions. 🎥 Watch it here: If this helped, let us know—we’ve got more...

Just sharing a short tip video on ether cleavage — a reaction type that shows up more often than you’d expect on the DAT. 📹 Watch the video on Instagram Dr. Jim Romano explains it clearly in under 30 seconds. If you’re reviewing acid-catalyzed reactions or SN1/SN2-type mechanisms, this is a...

Thank you so much, Dr. Romano, Nancy, and the Orgoman Team. I couldn't have done this without you!!!

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Let's start 2019 with a Bang! 2019 DAT(or OAT) and 2019 Math Destroyer Giveaway~ To enter: Join our study group and also add someone to the study group Make a comment in the study group Follow us on Instagram Once you have fulfilled the requirements Email: [email protected] Put DAT Giveaway...

Ask us anything! We have over 25 years’ experience preparing students for the DAT Exam! You can truly ask us anything. Feel free to join my DAT STUDY GROUP on Facebook DAT Study Group. I spearhead this group and answer all questions...as well as give many new and exciting problems each...