Very good lab instructor. Weekly quizzes which are based on pre-labs and post-labs. Fair but strict about attendance and being on time. For the most part an easy lab class if you have a solid background in basic chemistry. Always available during office hours and very helpful during class.

Look, most people say that he is a crazy difficult professor, and he is. But that is due to people not reading their book in advance and not studying. He is ALWAYS available to help, and is very helpful indeed. If you are wanting to learn Chemistry the right way, take him.

CHM 2045 is not by any means an easy class, and should be taught accordingly. Dr. Mullen is a great teacher and really strived to teach the class well. You must study and pay attention in class if you want a good grade obviously. I also had him as a lab instructor and he was always very enthusiastic. Great guy, great teacher, hard class, simply put

worst chemistry professor at UNF! I studied so much every day for his tests and got Fs on the first 2. I even spent hundreds of dollars on a tutor who teaches Chemistry at another school. I did well with the tutor but his tests were impossible!! I had to withdraw from his class. Don't take him unless you are a science whiz

Dr. Mullen tries to help students succeed. Chemistry is a hard class. I studied 10 to 15 hours a week and got a C. I currently have a 3.3 GPA. If you do his practice worksheets, watch his youtube videos, work old test (which he gives you) and ask questions, You can pass this class. I was also taking Bio & Physics, so I didn't have much time.

People say he is hard. Just pay attention & do class problems. He's thorough & goes over the material several times. Helpful office hours. I study Aerospace Engineering at Embry-Riddle & just took this class at UNF over the summer to save money. Trust me when I say the classes at my school are hard, I fight for B's, Mullen was an easy A.

VERY HELPFUL! Awesome prof.Gives you previous exams, practice problems, step by step solutions to every probelem on his youtube! BEST prof I have ever had. Sign up for his chem class, go to class everyday. He's dedicated to help students learn chem.

Dr. Mullen is great. I didn't think that in the beginning though. He speaks fast but he gives you supplemental resources to succeed in his class. I could have gotten an A- had I not gotten a 67 on one exam. If I had gotten a 70 or higher, would've gotten the A-. So here's my advice, watch the youtube videos and do the worksheets/past exams.

Is the most fun teacher I ever had. There is a 40-50% fail rate for this course, not because of him but because chem is a difficult course no matter who teaches it. I had to take this course twice. He has online videos, tons of practice sheets to help. Attendance is 6% of grade. Homework is once a week. To pass exams, PRACTICE! PRACTICE! PRACTICE!

Fantastic experience! He expects a lot of work from students but is very very helpful and very clear on what exactly he is grading upon. His grading system is also very fair, which is unusual. I wish I could take him for all of my classes. This guy makes me want to change my major to Chemistry.

This class is by no means "easy" and his tests are very difficult. But, he will prepare you for higher level Chemistry classes.

Dr Mullen was very helpful, although his exams were made for students that are strictly chem majors but His previous exams really help to study. He makes you apply the concepts a bit more than a GChem1 teacher should, so he prepares you rather well for future chemistry classes. However, if you aren't a science major I wouldn't suggest taking him.

This class is time consuming. Dr. Mullen uses a clicker to take attendance and answer practice problems. About 90% of the class fails the first two exams. And about a fourth withdraws. His class makes you question your life choices; however, if you go to his office hours and practice his problems multiple times, you may pass his class.

Very Hard Teacher!!! But you learn what you need too and for a chemistry 1 class, I was happy with that! Go to class and do all the outside work you can. Tests are crazy hard! Even with lots of studying. But you can practically fail every test and still pass the class. Participation really helps! Hard teacher and hard tests, but I still recommend.

Mullen is blunt, honest, and straightforward. If you don't care to learn, he will call you out about it. Chemistry is difficult in general, but Mullen really does his best to give you multiple opportunities to make a good grade. I got a B- only because I'm just not good at chemistry, but an A is definitely possible if you commit.

I had Mullen for Intro to Chem and I thought he was a fantastic professor. He gives you an infinite amount of chances to make an A in his class, as long as you show up to listen to his lectures. 1010 would take again. He's funny and relatable, and though he does give homework, you get a million chances to correct yourself, and the tests are easy!

Tough but fair. Show up and pay attention and you'll do fine. Pay attention to significant figures!

really wants students to learn. puts answers on youtube, to show how to do the work. one of the best professors so fa.

This class is by no means easy. Take this class if you're willing to work. I do recommend him though. He's a fantastic professor that holds his students to a higher standard. The tests are difficult but he bases them off the previous semesters' tests. All of these tests/answers are explained on his youtube page. WATCH HIS YOUTUBE VIDEOS!! THEY HELP

He's very good at explaining chemistry and understands if you don't get it. His tests are easy if you study and he repeats some questions on future exams! Didn't buy the main textbook but you need a clicker and his practice workbook.

Made learning Chemistry interesting and easy especially for Intro to Chemistry course. Well take him again next semester.

I took Mullen for Intro to Chem and I thought he was great. There are weekly homework assignments and participation is graded for your overall grade. I wouldn't have been able to get through this class if I hadn't gone to tutoring at least once a week. His tests are exactly what he teaches, so as long as you PRACTICE a lot, you should be fine.

Dr. Mullen is a great professor. He offers all of the tools necessary to get a good grade. If you practice a lot, you will learn the material and do great. I would definitely recommend Dr Mullen to anyone. He is a great professor and truly cares about his students. He is a great professor! Definitely recommend.

Not a huge fan of chem but I thought this professor was great he explains everything that is going to be on the test in detail. If you don't study and go to the chem tutor center you will not pass. I guarantee it. Study or don't take this class. He drops the lowest grade of the semester.

Interesting professor, didnt have any problems with the material since he wouldnt move on until everyone understood. Tests were pretty simple. Fairly easy class overall

Professor Mullen is an exceptional teacher for Chem 1. He has 4 tests, including the final, where the lowest score is dropped, plus easy 10 assignments on Pearson. Attendance is mandatory because he uses your clickers to give you attendance points at the beginning of every class. This class is not an easy A, but an A/B is possible if you study!

He really cares about his students and wants them to succeed. 3 tests and then the final. Homework is actually helpful through mastering chemistry. It's not easy, but doable if you study.

Dr. Mullen is a great professor! His lectures, practice workbook, and online homework all help with test preparation. Tests are not hard if you READ THE TEXTBOOK + DO HIS PRACTICE PROBLEMS! He is willing to help you with any questions you may have. 100% recommend!

Mullen is awesome!! His notes make lectures very easy to follow along with and homework is super helpful. I took him for Intro and 2045.

His lectures are great. He has his own book that he has created with all of his sample problems that he goes through in class. So you are able to have problems in class, outside, and it starts to stick. I dropped my chem class before cause i wanted to take him knowingly i would pass. I had him for intro and now chem 1. love him.

He stitches the class together using the mistakes past students have made. He focuses on the physical problems rather than just telling us to memorize everything. I have taken chem 1 at UNF before, and compared to the last professor, he is incredible. The only issue is his tests are multiple choice, making all questions equal points.

Hes a very good lecturer

Professor Mullen makes lectures fun and explains the material well. He gives easy points such as clickers that students use to answer questions in class, so attendance is kinda important. There are three midterms and a final but he drops the lowest midterm grade. Overall, the class isn't hard to pass.

Despite all these other bad reviews, I thought he was a really good teacher. I'm not naturally good at Chemistry but he made it fairly easy to understand and gave lots of opportunities in class to practice what you're working on. The class is hard on its own, but if you go to the SI sessions and do all your homework on time you should be fine.

I would recommend taking Mullen for CHM2045. He requires you to buy the Lecture/Exam Problems booklet from the bookstore. The booklet has exams that he has given in the past and completing those prior to the midterm exams helps tremendously because the questions are very similar. By doing well on those, there are no surprises on the exams.

Dr Mullen is a fantastic professor but his class was probably one of the hardest classes Ive ever taken. I had to study a lot and his tests are hard but once you learn how to study for his class it gets better. However, you will definitely learn chem with this professor so I recommend him, especially if you have to take more than one chem class.

I took this class for Intro Chem. I took a different professor for Gen Chem and I wish I had stayed with him. He explains things extremely clearly. On top of that, he has a Youtube channel that he posts explanations and test reviews. He is very particular about how he wants his class to run. One of the best professors I've had by far.

At first, I didn't like Dr. Mullen since he was kind of snobby but later into the semester he grew on me. He has the mastering chemistry as homework and it isn't due till the test day. Then he also has 4 test and you have to do well on those to get an A. When COVID-19 happened he was amazing and very understanding and helped us out a lot. Study.

Mullen is controversial but for Introchem I think he is a good choice. He is clear what he expects for his tests and his lectures are clear. Class is mainly exam (all multiple choice) grades and some HW/practice exam grades. If you pay attention in lecture and study well for the material, this class is easily passable.

this is chemistry so it is obv not easy, but dr Mullen is such a nice prof. i had him virtually so it was a "do it at your own pace" kind of class; tons of mylab hw and there are 4 exams (the final is cumulative). you have to watch the lectures if not, you will not pass. he is a good teacher, but you have to put in the work.

Great- was struggling towards end of semester and he really helped me out with good advice, ended up passing.

Dr. Mullen is one of the most understanding, lively Chemistry professors ever. Each week we have an online worksheet assignment where we rate our week and give feedback to Dr. Mullen. One of the best things is that Dr. Mullen (loves Legos and) makes the HW online due the Sunday before the exam. He also gives practice problems exactly like the test.

Intro to Chem is the first chem class I've ever taken - I avoided it like the plague in high school. It is not an easy class by any means, and I've had my fair share of stress and anxiety from it. However, Dr. Mullen tells you exactly what you need to know for tests, and they are not unreasonable. Taking him again for Chem I.

I love Dr. Mullen! I was dreading chem and hated it in HS, but now its december and it's my favorite class! He is so funny and nice and makes chemistry interesting, he's knowledgeable and teaches the material really well. Attendance isn't mandatory, but def helps!! You drop your lowest exam grade too and an optional final, definitely recommend.

Not an easy A, but what chem class is? Dr. Mullen is kind and very clear about what is expected. 4 exams, 1 dropped. 1 Mastering Hw per chapter, mastering practice exam assn. for each exam. 1 lowest hw and 1 lowest Practice exam dropped at the end. GO TO SI! YOU HAVE TO STUDY TO DO WELL. If you dont study, dont expect to get higher than a C. STUDY

Anyone giving Professor Mullen a low rating would have done way worse with any other chem class. Mullen drops the lowest hw, practice exam, worksheet and exam grade (including the final). 4 total exams. He moves a little fast in lectures but will slow down if asked. Material is difficult don't be fooled, but Mullen is a good teacher who cares.

Dr Mullen is my fav prof I've ever had hands down. Interesting + helpful lectures that prepare you for the exams, accessible outside class, super funny and kind. He makes learning chemistry easy and fun! Attend lectures and study outside class and you'll do great w him. Drops the lowest exam and hw and there's not a lot of hw. Take him if you can!

He takes attendance, however, he makes it clear that if you do not show up, it will not affect your grade. His tests are difficult, so I recommend taking advantage of SI and other tutoring. If I can give you some important advice, do the homework early. Do not wait till last minute, the homework takes multiple hours and is graded.

great slides, great lectures, he knows his stuff and explains it in the best ways. He is always a cheerful person and does a lot to help his students

I absolutely loved him. He's the absolute sweetest and tries to make very morning fun. He's very engaging and made chemistry a little less boring. He always offers opportunities for help, and in general he is such a sweetheart. He also drops the lowest exam grade, which helped a lot with my test anxieties. He's the best y'all.

Dr. Mullen did a great job teaching CHM2045. The only bad thing is the length of the class is too short. I wish they gave him more time so he could take more questions. He provides a lot of info very quickly in his lecture. He has a great personality and tries to make the class as interesting as possible given the subject. He loves chemistry.

LOVED HIM!! he is an amazing teacher. Super easy to understand. He does move a little fast in lectures but it's fine. Their are only 4 tests and he drops the lowest score. no final. I would take him again just based on the other professors.

Dr. Mullen gives 4 tests and has a homework for each chapter due the night before the test. He has an easy one minute survey due every week to pull your grade up. He is a very nice guy and makes dad jokes and wears funny chemistry shirts. You should go to class but attendance isnt mandatory. STUDY FOR THE EXAMS!! They are 20 questions out of 230

I highly recommend Professor Mullen. He is caring and always willing to help. He encourages office hours and his expectations are clear. Just seek help when needed

TAKE HIM over any other chem 1 prof. Easiest way to pass chem 1. As long as you do homeworks you can likely pass the class. One exam dropped. Super fair grading system. Mullen is very fair and caring and wants you to pass. Moves fast in lecture but chem 1 is very much a teach it to yourself class. Go to SI and study groups with friends.

dr. mullen is very nice! he's very caring and approachable too (PLEASE go to his office hours). he has 3 regular exams and a final and will drop the lowest score out of all of them. homework is on Mastering Chemistry and costs ~$120 to register for a semester. very lecture heavy, but he puts loads of practice questions on them! SI is useful too :)

i think i may be biased bc i took ib chem in HS (i got a 2), but i think his rmp score is too low. he has 4 exams. 1 drop. final is cum. If you want to pass, do all work,read textbook, do hw as he teaches it and use chat gpt to check ans (but make sure u understand it) GO TO SI, do practice probs at end of chap if confused. YOU PAY,GO TO CLASS.

He was kinda silly, but classes felt like a waste because most of the time he just read off the slides.

Professor Mullen is a caring instructor who encourages office hours and makes expectations clear. The class is challenging but manageable with dedicated study using the textbook, practice tests, and tools like ChatGPT and Unstuckstudy.

Dr. Mullen is the sweetest guy ever and truly wants his students to succeed. His tests are pretty tough, but if you attend lectures and get the practice problems you will pass them. Definitely not a class you can get away with not studying for, but he is very easy to understand and your scores reflect the time you put in. Loved his friendly convos!

Took class over the summer and Dr Mullen did a great job at lecturing and giving problems that were similar to the exam.

He's great. Did many practice problems during class, but sometimes he went through them fast so in those instances it was hard to understand for me. Overall, hes great and take him over every other chemistry professor.

Professor Mullen is a professor I would take over and over again if I could. He is funny, kind, and cares about your success. His lecture slides are awesome and his expectations are clear. Not homework heavy at all, but encourages you to practice the concepts. Very accessible and keeps a difficult class light. Take him if you can!!

He is great at explaining concepts and the practice problems during class help a bunch. Highly recommend going to the lectures as you can get a lot of examples for questions on the test. Test were all multiple choice and the drop the lowest score.

This professor was awesome. As someone who struggles with chemistry- his lectures were very clear as well as his grading criteria. Also, as a terrible test taker- you can still pass his class with a C even if you don't do well on the tests, just do well on everything else. Super relatable and his lectures were never boring. Take him if you can!