Significant Figures Step by Step | How to Pass Chemistry
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- เผยแพร่เมื่อ 4 ต.ค. 2024
- Learn how to find significant figures in a few minutes. This video helps you understand how to use all the significant figure rules, and how to round to the right number of sig figs when adding, subtracting, multiplying and dividing.
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In depth "how-to-guide" on significant figures:
bit.ly/sigfighowto
TIMESTAMPS
0:24 - What Are Significant Figures?
0:35 - Significant Figure Rules
2:24 - Adding and Subtracting Sig Fig Rules
3:11 - Multiplying and Dividing Sig Fig Rules
3:57 - Practice Problems
4:29 - Quick Summary of What You Need to Know
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She explained it better than my chemistry teacher.
same
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Exactly!
same
the fact this is true is unnerving. Thank you Melissa for taking time to help us pass chemistry.
love how she just vibin in the corner of the vid during the practice problems
RIGHT! I honestly love that.
This video was very well edited and had lots of good examples and explaining! You deserve wayyyy more subscribers and views!
yes, this really helped me in my chemistry class
I used it for phy but still helped
my 4176132 mental breakdowns a day because of chemistry are no more! I can't wait to watch all your videos and hopefully pass chemistry! if I don't pass I can't get into the nursing program so I am very stressed. thank you for these videos!! I wish you were my teacher.
Haha happy to keep you sane!
@@melissamaribel 3:09 why do you round to three sig figs
@@jonahmaurer5937 because out of the two numbers that were multiplied (24.5 and 63.2751), the least sig figs were in 24.5, and there were 3 sig figs in that number. When multiplying or dividing, you round the answer to the number of sig figs that is the least out of what you multiplied/divided
i wish you the best of luck for chemistry and the nursing program!
Did you get into the nursing program?
I wish Melissa was my teacher. I've learned more in the past 15 min of watching a few of her videos than I have learned in an hour and 15 min of Chemistry class. Thanks for the videos and keep up the good work. I'm glad I found your youtube channel.
I know!! I just found her channel and I've learned so much already
She is very helpful
Finally someone who is smart and knows how to teach!! You did a wonderful job of breaking the information down for those of us taking chemistry for the first time in their life( and needing to pass it with an A)!!!!
Did you pass with an A?
Where was this during my sophomore year when I was taking chemistry?! Oh well, its still really helpful for physics class
Melissa, I am writing this in an honest manner from the bottom of my heart. You are truly a life saver of many others like me; my professor do not know how to teach and as soon as I saw your video, I thought it was like some other youtubers that jumps on for views but Omg, I so loved your video, you helped me a lot. This videos deserve more and more and beyond views. Thank you for everything.
OMG!! I have to review a whole semesters worth of notes for my final and I’m glad I found this vid which has all the links to the lessons I need to review. That’s awesome now I can skip reading my boring chem textbook and focus on the specific lessons I need. What’s even better you get straight to the point and explain everything clearly vs professors and textbooks. Thank you for being so helpful!
Aww you are so welcome Brenda!! Happy it's making sense and you're not bored! 😂
Thanks you so much. I have a quiz tomorrow and I feel ready now.
I’m taking advanced chemistry and this makes way more sense now! THANK YOU ❤️ Can you do a video on orbital diagrams please.
LOVE. The only video under 5 minutes that explained sig figs AMAZINGLY well. Thank you!
Thank you, thank you, thank you soooo much!! Returning to school after 20+ years and I am so grateful!! The struggle isn’t so bad now!
Amazing video. I was confused about this throughout my whole AP Chemistry class last year in high school. I have my first college lab tomorrow college and I needed to figure out sig-figs for sure! Thank you so much!
i didn't get the pen
Cassandra Anne lol
I never gave it back 😂
I didnt get any paper either
These significant always messed my numericals now melissa ma'am really explained it simply.
Please continue making these videos!!! I'm in chem 1151 and your videos are helping so much!!!
Really helpful!! I was just doing a chemistry lab and it mentioned sig figs and I didn't understand that at the beginning of the year, and i just watched your video. It was so helpful! Thank you!
Thank you, I always struggled because I didn’t pay attention, but this knowledge is absolutely vital for a physics student! This helped me now I understand
Rule #3 (0:44) is not always true. If there is a number like 0.0009, rule 3 says there are 4 sig figs, when actually there is only 1. She goes on to explain this BTW, but doesn't clarify rule 3. Great video!
THANK YOU SOOOOO MUCH
This is amazing, my professor just confused me & you explained it with much clarity! Thank you!!
I am a little annoyed that a 5 minute video explained it to me better than my Teacher who took 70 minutes to explain and I still didn’t understand😂
I have a quiz tomorrow and you explained it better than my teacher ever could! Thank you!
From sophomore year chemistry in high school to sophomore year chemistry in college! I returned to these videos and they are still so helpful!
I just learned sig figs from this video the night before my test because I missed the day we learned it. Hopefully I pass! Thank you for healping me understand this!
THE BEST SCIENCE TEACHER EVER, MY GRADES BOOSTED UP THANK YOU SO MUCH! :)
Just subscribed, I start my 6 week chem class tomorrow so I’ll be watching your videos weekly!
Melissa,
I wanted to thank you for these videos. I am a new Chemistry student and they are a really good resource. I have watched some of them over and over to make sure I have a good understanding. Thanks again!
You are so welcome Shannon!
I took chemistry about 6 years ago in highschool, Now i am taking an online college course chem and this helped me so much!! My teacher did explain it but the way she did i was very confused with sig figs. Watching this lesson by Melissa helped to clear my confusion ! She says it in a way that my brain can understand! i took a quiz and failed it i have a test friday and now it makes so much sense. THANK YOU FOR HELPING! I hope do better : ) I will be looking at more of your chem videos as i take this hybrid chem course! Thanking God i found your videos 🙏🙏
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Thank you so much Seco, hahah I'm so glad you like the dancing part 😂
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Simple, clear, concise and pleasantly explained. Most students enter the classroom with little to no degree of expertise (IMO). Another view and subscriber earned. Bravo et Merci!
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watching this right before and exam 💀
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Melissa helped me get a B in Chemistry. This girl is amazing. I believe one of the greatest things about her is that she struggled at first, enabling her to become the brilliant teacher she is now. Thank you Melissa!
Do scientific notation videos!!! Please!!
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Thank you for this!!! I was so confused after a 2hr lecture about sig figs, you explained it so effortlessly and clear in FIVE min.. SUBSCRIBED!
Thank you so much for this video! I actually feel prepared for the sig fig portion of my chemistry exam!
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I learned more from this video than the less than 3 weeks with my rambling Chem professor! I keep second guessing myself with conversions..of all kinds
Oh wow! So happy to hear it's making some sense! 😊I have several videos on conversions to keep you from second-guessing yourself:
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THANK YOU SO MUCH! Your method of teaching has just stuck better with me and it is so effective it's capable of helping students taking chemistry to this very day.
Thank you so much, my chem teacher is so unorganized and it is hard to learn in her class
On 4:03 how did yoy get from 218.5813 to 218.58 why did you remove those numbers
I was also confused 😭 but i think I got it
We ended with 218.5813 right.
So we look at our numbers again with what we added up
142.01 has 2 decimal places.
41.9903 has 4 decimal places.
34.581 has 3 decimal places.
The result should be rounded to the smallest number of decimal places among the numbers involved in the addition, which is 2 decimal places.
The digit after 58 in 218.5813 is
If this digit is 5 or more, you round up the last digit you are keeping (in this case, 8).
If the digit is less than 5, you keep the last digit as is and drop the remaining digits.
Since 1 is less than 5, you do not round up. Meaning, you keep 58 and drop the remaining digits.
Result:
218.5813 rounded to 2 decimal places is 218.58.
This comment saved my television's life.
Doing some last-minute catching up on understanding sig figs before school tmr and I was thinking to myself, I was never gonna get it until I came across your video. Bravo! Gracias! Summed it in a less than 5 minute video compared to a full hour of notes on sig figs in my Chem 2 class
Late night studying for a chemistry quiz I have tomorrow. Thanks for the help! Subscribed.
The concept is explained very much nicely. I just loved it. Now I am 100% clear about this sig fig.
Thanks for this short and nice video 👍
Need Chemistry for the RN program. My instructor was talking in Ebonics but you have made it crystal clear. Thank you.
thank you for making an easy to understand and non cringe video to explain this stuff. its so helpful!!
Great video! I am in organic chem in college and you were able to simplify a topic in just 4 minutes where it took my instructor over 30 minutes.
Thankyou so much!! Please keep doing videos. We just learned about sig figs today but my teacher went too fast. I still have some trouble with adding and subtracting sig figs but everything else is really good! I already subscribed :)
In multiplication and divison of sig figs, the least amount of sig figs in the equation is the same amount of sig figs in the result. Now in addition does that still apply but with decimal places? For example my teacher wrote: 0.02cm + 2.371cm. The one with least decimal places is 0.02 so the result 2.391 would round to what?
Please keep doing what your doing!! This video made sig figs extremely clear and it helped so much! Thanks again
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Wow! SO helpful! My teacher couldn’t get me to understand what is significant and what’s not, now I know!
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This was a really good video. Before coming onto your video, I didn't understand significant figures. After watching this, now I do! thank you so much!
QUEEN ILY THANK YOU
my chemistry teacher didn't even go over how to do this, you saved me!!!
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it's the truth today we had Test for sig figs and I'm the only one who got the answers right thanks to you 😍
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Great video! Who knew significant figures could be so simple
This was phenomenal, thanks!
Omg yes!!! Thank you so much for your videos! Where is the link to the practice problems?
You are so welcome! And I no longer have those practice problems available but I did create a detailed how to guide on significant figures and dimensional analysis. You can shop those notes here: melissa.help/sigfignotes
Thank you so much.i corrected my many misconception..your questions collection are really very well.💖
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I love your dancing during the quiz part. Thank you so much for this.
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I'm well understand the significants figures through your lecture thank you so much
Thank you for posting and leaving this video on the internet. it helped my in my chemistry class.
Wunderbar - I showed this video to my High School Chemistry Class. [California]
have my ap chem test tmr and this is literally so helpful tysm!
Thank you so much! This video was really helpful. I'm an incoming college student in an introductory chem class and I have a test on this soon.
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The best video I have ever seen about sig figs
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Just a quick clarification from the video for all of you chemistry people trying to learn online: more sig figs does not lead to a more ACCURATE measurement, instead, more sig figs leads to a more PRECISE measurement. Great explanation!
You did a good job.I have been struggling with mine.