He is such an ****..He says he takes test problems directly from homework,ha thats bull. the class average=44!.He embarasses the crap out of you in class.. doesn't go over any hw problems either,its not even worth going to class because he doesn't teach anything!!!Hes a very hard grader.The lab teacher should take his place because he sucks!!!

The worst prof I ever had. I tried to go to him for help and he made me wait for hours before saying I cant meet with you. He was terrible and can barely speak english. Exams are difficult and he wouldnt answer questions during lecture. Waste of my time and he failed most of the summer class.

He is HARD! He kmows his material very well but can not translate it into easier terms for you to grasp he also moves at the speed of light with the work. Makes u feel like the dumbest person in the world. I would advise anyone taking chem to take Karp he is very sweet and nice. He also takes his time and break it down for you to understand.

I had Fainzilberg for both CHM 3&4,& for both labs.He is REDICULOUS!can barely understand him speak,& goes too fast through the material.He is not much help & gets a little rude when u tell him u dont get something.I was mad I had him for CHM 4 but he was the only one teaching it!Thank god I passed i wouldnt have been able to go through that again.

He knows his stuff when it comes to Chemistry, however he isn't very good at translating it into terms that can be understood by beginner chemists. For a grad student level chem course, he would be brilliant, but for chem 3 and 4, its chaotic. Take him for lab, take any one else for lecture.

Would never take him for any class again. he was absolutely terrible. Never had such a bad professor

Worst professor I have ever had.

I am a student that works hard, and I know I am smart, and I usually do well in all my classes, but Dr Fainzilberg is not good at teaching us the material. No one has an idea of what he is teaching. I feel that I am in a Spanish class. He makes chemistry harder than it is. Everyone are doing bad in his class. He raises his voice and yells at us.

It's just so sad to see how everyone is struggling to pass his class. His teaching skills needs improvement. His personality is awkward. He is out of control.

Don't take him. Although he gave out an answer key of the test after the test was over, and other classes taking that exam the next day took advantage of that system, he doesn't teach anything. If your a type of person that wants to learn, don't take him but if you just want a fake A letter grade, take him.

I hope this guy goes to hell because he is the reason I dropped out of Chem and taking it now for summer.

I never write reviews for profs, but I just had to address how rude this man is. He barks at you like a dog. He genuinely gets off on creating fear and anxiety in students that he perceives as weak/lazy/quiet. Reeks of tobacco too. I don't understand what it is that compels him to continue teaching, honestly, he seems like he despises it.

He makes the whole class anxious about the lab. He doesn't give off a vibe that shows that he's approachable. He will make you feel dumb and want to drop out. His accent makes it very hard to understand him. He smells of tobacco. He is not a great teacher and he makes it seems as if its a burden for him to teach.

Awful teacher, makes everyone in the class feel nervous. Students don't want to answer questions in the class. He does not explain himself well and acts like he hates teaching. The tests are ridiculous and the entire class is failing!

He may be an ok teacher,but he is complex & his attitude is ridiculous. He's disrespectful&rude. Can't stand to be in his class. He gets inpatient&frustrated when u don't understand something. Like others said, he encourages u to ask questions&speak up, but when you do he raises his voice and seems angry. Which makes it hard to approach him

Worst professor that could possibly exist. Im normally an A student and Im failing in this course. I got a 39% on my first test with a tutor. This class is nearly impossible to pass especially if chemistry a weak subject for you. The professor admitted himself that 90 percent of the class will fail the next test. Way to uplift your students.

Terrible ! Lectures feel like theyre 3 hours long. He told all the students at the beginning of the course that if there are any questions never hesitate to ask them. But every time you ask him something he gets incredibly annoyed at you. Impossible to understand. Gives 40 questions of homework every night and doesnt grade it! Horrendous.

The WORST professor by far at LIU. Not just a horrible professor, but person as well. He is extremely rude and would rather fail you than actually put effort into teaching a decent lecture which is *shocker* what most teachers are supposed to do. Incoming freshmen DO NOT TAKE, he will make you want to drop out/transfer!!!!!!!!!!!!!

Believe all the bad reviews.

Very tough professor, make you want to cry when you participate. His accent is so thick that it is very difficult to understand him. He has an attitude and is very rude to students. makes everyone feel anxious and doubts about what they are doing. I would not recommend whatsoever.

As a person this guy isn't the worst. Had online lab with him due to corona and the class was horrible. the lab reports are not clear at all and he accused us all of cheating one week due to a mistake he made. toughest grader you'll meet, make sure u don't make 1 mistake bc he will literally give u a 30 on labs. Avoid this prof if you can

Avoid at all costs. Although he makes it clear what is on the tests, he makes the tests very hard and partial credit is practically nonexistent. He doesn't care if you don't understand the material, so do not even bother going to office hours, you'll leave feeling horrible about yourself because he belittles his students. He also can barely teach.

Absolutely horrible!

hardest professor to understand. He doesnt give slides and because of his accent, it is very hard to follow through. gives us 24-hour tests that usually takes up the whole day to do even if you studied (and no you can't find answers online or find out how to solve online). He doesn't care about online kids at all, especially in his lab.

Stay as far away as you can from this man. He made me cry when I asked him for help, then told me he did not care about my emotions and he was simply there to teach me chemistry. He does not care if you understand it and make one simple mistake, -30 pts; so check your work over 10x at least. He has no good side, don't bother trying to get on it.

This man has tenure, so he will speak to you in whatever way he pleases because he will not get fired. He is rude, uncaring, uncivil, degrading, insulting, discourteous, what other synonyms can I use for horrid? Lectures are clear, but if you don't understand, get a tutor, don't bother asking questions unless you want to get yelled at. Please avoid

Fainzilberg is something else, he talks down to his students if they are confused or get something that he asks wrong, singles people out, is hot headed: he won't think twice before getting heated and yelling at students. his accent is hard to understand and he is not helpful at all honestly any professor is better than him.

One of the worst experiences I have had with a professor. I had him for class and lab, and his teaching style is the worst. Rather than going from conceptual to application, he does math problems in front of the class for an 1+ hours. He doesn't take criticism, doesn't do partial credit, doesn't teach, is rude, and doesn't care. Save yourself.

Would not recommend Tough grader, heavily test based (only 4 exams given), test problems are only 10 questions, no partial credit, and harder than those found in the textbook. My advice to the administration of the school: create a standardized curriculum for chemistry courses so as to not lose credibility for your institution.

Professor wasn’t good at teaching in general and was very mean

Do NOT listen to the ratings from Jan. 3rd, 2022! They are setting you up for failure! Prof. Fainzilberg is renowned to STEM majors for being the hardest professor on campus. More people fail his class than pass. My advice is to find a different chemistry lecture professor on campus or use those 9 transfer credits you have on this class.

Never take this professor. Your GPA will go down. The tests are impossible and he is disrespectful towards students. No partial credit at all. You will have to teach yourself or get a tutor. Just DONT.

NO ONE should take his class because what is the point if he is yelling at people and teach nothing while the exam is copy pasted so only the people that have the exam from other section get A and the rest will fail or drop. What is the point if no one learns anything. NO one should tolerate his negative behavior such as disrespecting and yelling.

EVERYONE MUST BOYCOTT CHEMISTRY CLASSES HERE BECAUSE HE IS THE ONLY ONE TEACHES IT AND HE IS NOT FAIR AND DOES NOT TEACH ANYTHING AND PURPOSELY FAILS EVERYONE. TAKE CHEMISTRY AT ONLINE CLASS LIKE UNE. ALSO RECORD HIM DURING CLASS AS HE CAN BE SO RUDE

He doesn't know how to teach.

Very confusing professor and doesn't stay true to his word. He is also really rude when you have a question to ask.

This professor is the worst! He does not believe in technology or computers and is just plain nasty to his students. He regularly insulted us and the learning atmosphere was super uncomfortable. I barely survived this class- stay as far away from this man as possible!!

This professor is incredibly strict, and his classes are very difficult. He speaks quickly and expects everything to be written down. If you miss class or fail to write something down, expect to be looking it up in an out of date textbook. There are no slides to look back on, and there are very few questions on the test so only a few to fail.

genuinely cannot teach. be prepared to teach yourself.

Trust me just avoid him and take a different section. He's a very strict grader. If u want to do good u need to do the homework aligned with the lessons in lecture if u fall behind and try to catch up last minute before a test u will fail. Also the lessons are heavy, and fast paced. If u take him make sure u stay on track if u get off track drop it

I'm halfway through his class, don't take this professor. I was warned by multiple people not to take him, but he was the only option for me so I took his class and I regret it. The only things graded are the 4 given exams, there's no extra credit, and he assigns practice problems but doesn't check or grade them. His exams are literally evil.

He is abusive towards students and faculty. He routinely calls students stupid, yells, disorganized, disrespectful, accuses his students of lying, publicly humiliates his students, says that veterinarians are fake doctors, and more. Often makes misogynistic comments. Extremely unfair grader. Loses his temper. He has been reported to the dean.

Disgusting comments rude and doesn't teach i wanna know who actually hired somebody like this he can't even answer questions correctly on his board.

I attended the first few weeks of the lecture and I couldn't understand AT ALL. He doesn't repeat what he says as he expects you to write down everything he says. Grades are solely on the 4 exams but he drops the lowest grade. Could have been better if he graded the homework assignments and attendance.