What is Density in Chemistry & Why does Ice Float? - [1-1-12]

[@Nightcrawler58]

You are one of the best professor ever existed on the face of the world. I am 65 year old man raising two boys ages 8 and 10 on my own. I love the way you explain these subjects. You teach from the bottom of your heart Mr. Jason. That's my son's name. I love sir. You are unique and may God bless you. Thank you so much !!!!!!!!

[@felixyongco4420]

Jason is God given to us to CLEARLY explain what other tutors can not . Thank you Sir.. Wish to see you again ...in other tutorials.

[@MathAndScience]

Many thanks!

[@mariocesarsousa]

The best utube teacher. I learn easily all the sciences✍️✍️👏👏👏

[@JanitorMan432]

Sir, you’re an incredible teacher. I learn more from each of your individual videos then I did in almost all of high school combined. Thank you.

[@MathAndScience]

Thank you so much!

[@naderhumood]

Terrific keep it up, Thanks v much Sir .Great channel.

[@superranger_all-rounder]

Sir ! Yesterday i find your channel. Sir the way you explain is incredible. This channel has everything thanks 👍

[@ricardvaletaibanez7193]

Thank you, teacher, for the explanations in this lesson about density and the polar molecule of the water 😀👍🏻💧🌊❄🌧

[@anthonygregg862]

amazing presentation. you explain things so well. Thankyou sir.

[@MathAndScience]

Welcome!

[@mathsprofabderrahim]

Thanks prof 👍👍👍

[@girmaybass68]

Thank you so much for explaining in detail!

[@MathAndScience]

Glad you liked it!

[@RockySinghaniyaRocky]

10:25am6/1/2440

[@fahimkhalasi4115]

thank you for explaining what density is and how ice floats on water and linked to polar molecules as well

[@MathAndScience]

You are very welcome!

[@daved3494]

That was a wonderful lecture; very enjoyable as always. The density of substances was very well explained and re-iterated. I never knew why H2O expanded during its phase change. I enjoyed how you mentioned that, life on this planet would be much different if not for this fact. My understanding is that H2O is the only substance that expands a few deg. before it freezes, i.e. before the phase change. I believe the expansion of water starts at 4 deg C/39 deg F. As far as I know no other substance, known, expands as it cools.

[@user-abd_almer313]

الخط المستقيم بين الأوكسجين والهيدروجين في الماء منحني وليس مستقيم ! نظام SI - m الملي متر = سنتيمتر تكعيب 1cm³=1mL 1L=1000mL كثافة الجسم = كتلته على حجمه Density = mass\volume =kg\m³ وقد قاموا بتصغيرها لكي تكون سهلة =g\cm³ الملي متر نفسه السنتمتير الكتلة قياس عدد الذرات في الشيء .فإذا ضغطت القطن سيبقى نفس الكتلة . فقط الكثافة تتغير . وإذا قطعت مكعبًا من القطنة الغير مضغوطة سوف تاخذ كتلة اقل لكونها كبيرة ، ولكن إذا قطتها من المضغوطة ستأخذ كتلة اكبر لكونها صغيرة ومجتمعة . كتلة الماء = 1 g/ml ، وانها قريبة من 0.999 وليست 1 . ودرجة الماء الحرارية : 4°c كثافته = 1g/cm³ اذا ذكرت كتلة الشيء اذكر كثافته . اذا كانت كتلة الشيء أصغر من 1g/ml فإنه يطفو على الماء . من حسن الحظ ان الجليد يطفو . اتضح ان الأوكسجين هو أحد أقوى قوى الجذب للالكترونات . الهيدروجين والاكسجين يتجاذبان فالاكجسين شحنته موجبة وذاك سالبة . الاوكسجين يقوم بسحب الالكترونات الخاصة بالهيدروجين 1 ، 2 .. قليلًا جدًا ، لذلك عند التكبير ترى ان الهيدروجين عبارة عن شحنة موجبة ، وهذا يسمى جزيء قطبي او الماء القطبي لانه يحتوي على اوكسجين سالب وهيدروجين موجب . لماذا يطفو الماء او الجليد ؟ لأنه عندما تكون بتبريدها ، القوة الجاذبية بين الهيدروجين والاكسجين المجاور الجزيء يقفلوه في مكانه في حجم اكبر ، وإذا كَبُر الحجم صغُرت الكثافة .

[@iahmedtech1515]

شكرًا شكرًا على هذا الملخص حبيبي❤ رحت التعليقات ادور قلت يمكن في وادور قلت ما شكله ماحد سوا ملخص وبعدين اخر شيء انصدم انه في ملخص وبالعربي بعد خلااصص فرحت جدجدا الدوبامين ارتفع واخذتهم وحطيتهم في النوت مالتي اشكرك الله يكثر من امثالك ويوفقك

[@user-abd_almer313]

@@iahmedtech1515 حبيبي الله يوفقك 😂❤

[@drumtwo4seven]

Nice 👍

[@dalip1178]

Thank you 👍

[@elahawaziri]

your explain everything so great thinks

[@alhajisaccoh5055]

Things I missed in my chemistry lectures in university are being reduced to the simplest form for better understanding.

[@mssalphaabdirashid7113]

I really like your explanation Thanks to you👌👍🥰

[@MathAndScience]

Welcome!

[@dapostop7384]

your a very good teacher!!

[@efmensah]

Amazing tuitions

[@light9325]

Thank you!!!😎

[@MathAndScience]

Welcome!

[@ramsundarpanda754]

Thank you so much for your super explanition!! 😊

[@MathAndScience]

You are very welcome!

[@tresajessygeorge210]

THANK YOU... SIR...!!! It is easy...!!!

[@davidwatson7604]

"if you stick with me..." Hahaha. You are doing important (to me) work here bro. Thank you.

[@briankelly5828]

Did you mean "because ICE floats"? You said "water floats" at the start. Great video.

[@MathAndScience]

Hahah yes I meant ice floats. Got too excited there!

[@Civil2025]

super sir

[@roberthornbeck3831]

Wow. where were you in 1967 high school :) REtired engr

[@thedeadmansstory3049]

g-g-g-great!

[@endingthesilence4180]

What about the density of people?

[@rezzer7918]

Should be finished teaching a year-one's worth of chemistry by now. Wow.

[@rodericksibelius8472]

well, I am hell bent out of shape while taking a shower... 😂

[@mohergenrader2113]

I'm picturing H and O in the H2O molecule acting like they are in a mosh pit when it's hot. Is that wrong? 😂

[@hemarajue2736]

In hot balloons,it is the rise in temperature that decreases the density of gas.

[@babapiremard3947]

1 cubic centimeter equals to 10 mm or 10 ml

[@frankroper3274]

The density of an alligator is less than 1ml since I started to go swimming on a hot day in Ms in Vicksburg and I took my shirt off and I noticed 1 log in the water. I looked around to see if there were more logs but no just the 1. I started in to the water and then I saw the log had eyes...it tried to duck when we made eye contact but it was too late! This is proof that a alligator can float and if a log has eyes...don't go in the water!

[@babapiremard3947]

Is not 1 cubic ml equal to 1 ml

[@camleboy1287]

No way water configuration was a from no ware and we evolved I can't buy this although you are a good teacher yet as much as i learn from you as much i believe in the creator and reject evolution nonsense and this why GOD said that he made every living thing from water Quran 21:30 Do the disbelievers not realize that the heavens and earth were ˹once˺ one mass then We split them apart? And We created from water every living thing. Will they not then believe?