AP® Chemistry Multiple Choice Practice Problems

[@chaddaniel8891]

It’s like an old friend I haven’t seen in a while came into town to help me better teach my students chemistry

[@Sensei-jh8yn]

I feel exactly the same

[@keiraevangeline6706]

My AP Chemistry test is coming up in two weeks and I can't tell you how much even just 20 practice problems have helped me prepare for the exam. Thank you so much and I hope you can continue giving tips and tricks for students who still feel unprepared for the upcoming AP exam.

[@sophiaredwood5825]

My test is today and same

[@naraeyang9469]

Good luck on that test today, everyone

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Score

[@user-vh9fp6fv6o]

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Its like seeing an old friend after a very long time. just puts tears to my eyes.

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When our grades needed him most, he returned

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Avatar the last air bender reference, btw look at the live action it’s so cool

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I brought your channel up with a classmate this week, and my college chemistry professor over heard. She recognized your name, and highly recommend your videos. I was happy, your videos have helped me so much!

[@shaunagrier]

Watching this while I plan a new exam review strategy for my AP Chem students. Thank you so much! You have made the later part of my 18+ years of teaching chemistry pure bliss!

[@tdewitt451]

I hope this is helpful to you and your students!

[@sharonli9558]

I used your VSEPR videos when I first taught AP chemistry 7 years ago. Now I get to use this new resource just in time to prepare my students for the exam. Thank you so much. Keep up the good work!

[@tdewitt451]

So happy to hear it. Send me an email and let me know if it’s helpful for you and your students!

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I just took a chem quiz and the questions were worded differently from what I studied and reviewed. You're a lifesaver man. Thank you!

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I'm so excited you're uploading again!! You got me through chemistry, I can't thank you enough. I'm no longer in school for chemistry, but I'm excited to follow along with your video 🥰🥰

[@DeathBoyZ5012]

Hey Tyler! Great to see you back! I’m preparing for MCAT and this helps a lot with conceptual questions, thank you!

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I'm commenting all the way from Papua new guinea 🤟...You're the best teacher on U tube ....thanks for the vids you create n hope you continue helping science students around the world❤️

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We missed you King 👑

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You're back!!!! Bless you! Been watching your videos for over five years now! Thank you for everything you do:)

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I dont even go to school anymore, but here i am

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Many have tried but no one was able to wear your crown. The chemistry world needs you.

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Thanks it helped me a lot

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You make everything so much easier to understand!

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I'm absolutely not looking at these three hours before the test promise :)

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Thank you so much , friend, for coming back. We all need you badly.

[@corbanespinoza8226]

NO!!! the endpoint is when the indicator changes color, NOT when the moles of analyte and titrant are equal. the equivalence point is when moles titrant added = moles analyte initially present such that only the salt remains

[@tdewitt451]

Thanks for pointing this out. I literally can't believe this slipped by me, when I'm always emphasizing the difference to students. I added a notation in the video description to clarify.

[@jee-lysis233]

sir, im from india , im following you since my 5th standard. now im 12th standard and preparing for JEE exam .I came back to learn redox reactions from your video of 5 years ago. I just wanted to checkout how my old teacher is doing now and came to checkout your latest video and im glad that you never left youtube, you are still teaching with same energy from 15 years on youtube. btw you look soo young.

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Sir please upload all the videos of chemistry lessons......your teaching skills are amazing...it is very useful for poor people

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Can u please do a video on transition metalsss and NMR please!!!????? I have my finals in 2 weeks and you are my only life saverrrrrr!!!!!!!

[@satviktutor9180]

Hello sir, could you please make a video on the types of titrations for example back titration, acid-base titration, and redox titrations? It would help a lot. Thank you

[@charlenelim9504]

About to go do my ap chem test pray for me🫡

[@emilymellon6645]

Thank you so much Tyler! I appreciate your efforts to assist students ].

[@Michael0703]

My ap test is tomorrow hope I do good this definitely helped

[@Michael0703]

Na bro I failed that💀😭

[@omarsafwan689]

my exam is in 4 days, ill update@@Michael0703

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Hello, I’m glad you are back. It’s like meeting your childhood friend. Great 👍

[@jonathandavisjoshua7812]

Great video Mr. DeWitt! I learned a lot from this video. Thanks you so much!!

[@anshjuneja7129]

Good luck to everyone doing the AP exam tomorrow

[@tdewitt451]

I hope you get a 5!

[@anshjuneja7129]

@@tdewitt451 Thanks! Your videos help a lot❤️❤️

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Omg...you are back again. I am so happy!

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An unexpected upload, but a welcome one.

[@zenyabian]

Thanks for the vid, test was well-made and the explanations were very helpful!

[@tdewitt451]

I am so happy to hear that!

[@vidyakaviveerappan2483]

Thank u.......u r back . Missed u. God bless u....stay forever...🥰🙏

[@md.zunaedjamil2]

OHH maann !!! Sir I missed you a lot!! I used to see you video .....Only ur video helped me clear my basics ... Great to see you again.... Hoping a reply from u 🥺❤

[@marxunemiku]

doing advanced higher in scotland is actually extremely similar to this. usually americans of equal age do what we did 2-3 years ago but here we seem on a level for once

[@danbocker7398]

Confused on 2. Why does it matter if the nitrate ion won’t actually accept a hydrogen ion. It’s still a conjugate base by definition, unless all strong acids and bases don’t have conjugates.

[@tdewitt451]

That’s the point. Strong acids don’t have conjugate bases. Conjugate bases need to be able to re-accept a proton and form the acid again. The nitrate ion can’t do this.

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you are coming back it will be another world

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Thank you I trillion our honor teacher we love you so much . How can I join to your website? Please help me🙏

[@Romita68able]

Welcome back Tyler

[@nkanushi]

Hi. For problem 18, why is the q for magnesium not -420? Shouldn't it be negative since magnesium is losing heat in the reaction?

[@tdewitt451]

Yes, you could do it that way. But since you’re solving for the mass of the Mg, and you know mass won’t be negative, you don’t really have to worry about signs here. But yes technically qMg is negative and qH2O is positive. But again all we care about here is the magnitude.

[@nkanushi]

@@tdewitt451 thank you so much for the clarification!

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listen, im studying literally the hour before the test so

[@tdewitt451]

I swear this will help! Best of luck, I hope you ace it!

[@jasminerutka3543]

@@tdewitt451 thank youuu!

[@VsroYT]

Legendaryyyyy!!!!

[@chasehansen7445]

T-minus 2 hours until exam, good luck everyone!

[@lisazalewski5761]

can someone please help me understand question 1? aren't there more moles of Fe making S the limiting reactant instead?

[@tdewitt451]

You have 10 grams of each. Take 10 grams and divide it by the molar mass of iron. What is that number? That is the number of moles of iron. Divide 10 grams by the molar mass of sulfur. That is the moles of sulfur. Which number is bigger?

[@lisazalewski5761]

@@tdewitt451 ohh!!! that makes a lot of sense, i flipped the numbers when dividing. thank you so much!!!!

[@林林育陞]

Will the ap exam provide periodic table with names of elements?

[@tdewitt451]

That is a good point. The periodic table on the AP test will not have element names.

[@viveksgangola7569]

Can u plz provide pdf file of all these questions..

[@tdewitt451]

Yes, go to my website www.tdwscience.com/apchem

[@sheevedaily1060]

1:22:15

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its time

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i am screwed

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I swear I didn’t search for this… not sure why KZbin recommended this 😂

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I am from India. I want to written a "India's toughest exam"(JEE Advance).can you help me professor?

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This is too easy for IIT JEE lvls. I recommend you stick to the Indian academies on KZbin dedicated strictly for IIT JEE to help you.

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Good luck on the AP Exam today everyone!

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Hi! I wanna know how was your ap exam, I'm a junior and takes ap chem too, I'm looking for videos and peoples comment for any suggestion. I wanna know how you guys do last year :)

[@vincenthuang3618]

Are these problems from collegeboard?

[@tdewitt451]

No, but i studied every College Board question I could find, so that I could write questions that are as similar as possible.

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please save my ap chem grades D: D: D:

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ily

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A lot of things in chem I know only because of you. You’re also the reason I like chemistry so much. Thank you so much 🤍

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Its when u think that u will fail, then u find this hero got a video for u 😩🫶🏻

[@tdewitt451]

Best of luck!

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Hahaha I failed 😭😭

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So happy to see you back! You helped me throughout school more than anyone else. Forget university professors, you were the professor. Thank you for all you have done. 🙌🏼🙌🏼🙌🏼

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Soon I will be a metallurgist, I am an undergraduate student this time. Watching you from my old school classes Its all just because of your electroplating classes force me take metallurgy love you from Karachi 💗

[@tdewitt451]

Whoa, that's awesome. I wish you all the best of luck!

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Im glad youre back man but i needed this 3 years ago🥺

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I’m currently a senior in HS taking AP Chemistry, and this video helped solidify so many of the concepts I’ve learned so far. I am very anxious about the exam coming up, so your resources will be super helpful for me. I’ve been watching your videos since the beginning of high school of introductory chemistry. Your style of teaching is honestly the clearest and easiest to follow out of all the KZbin STEM channels. I actually find myself using the same patient and step-by-step approach I saw through your videos towards peer-teaching my classmates tough topics, which helps me tremendously as well. Thanks for all you do! Please continue with the AP related videos and practice questions!

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You’re back! I've been watching your videos for the past 3 years and can’t tell you how much I appreciate you because I became an A student from being an F student just because of your guidance, thank you!!! ❤️

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i love you

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Sup bro you have your test tomorrow as well?

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Please make more of these Multiple Choice Problems! Super Helpful!

[@tdewitt451]

Really happy to hear it.

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Keep it up!

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I love you Tyler Dewitt

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Thx

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You're a true legend. I'm so delighted that you started making videos again. I watched a lot of your chemistry videos back in 2018. I was lucky to find your channel. You helped me enjoy my chemistry classes and also pass my exams. I hope you'll make more videos in the future and also not stop your activity. You're such a brilliant person and I admire your way of teaching. MUCH LOVE from Egypt ❤❤

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awesome

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I last saw him when i was in highschool now I am in my last year in college now. You don't know how much we missed you Tyler.

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The goat is back 🔥⚡️

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Return of a king

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really a very useful video before ap chem!!!!!!!!

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Not all heroes wears capes

[@minaalzehhawi7355]

For question 19 shouldn’t you switch the -0.13 since the oxidation equation is different it’s reversed which makes it positive 0.13

[@tdewitt451]

Great question! So you see how we subtract the negative here? That makes it positive 0.13. You have two choices, and they’re both valid. You can either subtract the anode value (without flipping it), or you can reverse the oxidation equation and flip the value. They will give you the same math. Does that make sense?

[@minaalzehhawi7355]

@@tdewitt451 yes!! It does. Thank you very much😊

[@sejalghimire779]

I have a question on number 2, why is C not right? HNO3’s conjugate base is NO3^-1, so it does have a conjugate base and there is a proton being taken away?

[@tdewitt451]

It’s a really good point, and I think I’ll change this question in the future. This was based on a College Board question where they implied that Brønsted-Lowry conjugates are best used to describe pairs for weak acids and bases. This was one of those “both are right, but one is more right” kind of questions. But it’s a bad question and I’ll change it.

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Sir love from India . Your video is very knowledgeable. Thanks.

Democratize knowledge with KZbin's audio track feature..

[@tdewitt451]

Tell me more about that. What should I do?

@@tdewitt451 I'm Brazilian, I don't speak English, I have to use translators to access quality content.

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ok i def blame my teacher for making me hate chem. we only did study hall for the whole year. It's literally taking a college chem course without anyone to guide you and help you. So I'm glad you are here to help me at least get a 1. edit: I can't even remember basic chem now. don't even know what to study

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If you have to put someone on a pedestal, put teachers. They are society's heroes

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Your redox reaction videos from back helped me so much. Glad to see you back!

[@JG-cy2wf]

Tyler, can you please create a video for the ACS Organic Chemistry exam?

[@pavellambracht5823]

but for the first question, you do not know which Iron is used... It can be Iron (I) or Iron(II) or maybe even Iron(III)... I do not think it is a good question.

[@tdewitt451]

But it is clear that Iron (II) is used because FeS is in all the answer choices, and FeS uses Iron (II), since sulfide always has a 2- charge. Often, there are very important clues revealed in the answer choices, and it is an important skill to learn to read the answer choices to look for more information if you have doubts. In this case, the answer choices revealed that FeS was the product, and that information allowed you to correctly write the balanced equation.

[@pavellambracht5823]

@@tdewitt451 that is fair. Thanks for the reply.

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very good I like that. you explain very well!

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sucha good video thanks a ton much love

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