Скачать с ютуб Atoms and Molecules Class 9 Science (Chemistry) One Shot (Concepts+)Questions | CBSE Class 9 Exams в хорошем качестве

Atoms and Molecules Class 9 Science (Chemistry) One Shot (Concepts+)Questions | CBSE Class 9 Exams

BYJU'S Self Study Program: https://shop.byjus.com/collections/bt... 🔷 BYJU's Mini learning Program is now FREE 🤩 for the first 500 users go for it!!! Use Code- YTFIRST https://shop.byjus.com/products/byju-... Code is YTFIRST⏰ Do not miss this chance😱 In this episode of the new series called Jeet Ka Josh, we will be covering all the important concepts in your Class 9 Chapter 3, Atoms and Molecules. In this online session, your favourite BYJU’S educator, Kriti Ma’am, will be covering the following topics in detail using examples: Laws of chemical combination Law of conservation of mass Law of constant proportions Dalton’s atomic theory Atomic mass and atomic mass unit Molecules of compounds Mole concept, molar mass, atomic valency Mole concept & Avogadro number ➡️ Submit Your Questions For The Doubt Solving Session: https://forms.gle/b4hKVWrjazYE8UUF8 📢Signup and watch more exciting videos for FREE: https://byjus.com/learn/home?utm_sour... ➡️ Download the BYJU'S App Now: https://btla-androidk12.onelink.me/8U... 📢Join our Telegram Channel: https://t.me/byjusclasses910official 🔔 🎓 BYJU'S Free Scholarship Test, Sign Up Today: https://byjus.com/bst?utm_source=yout... 👉SUBSCRIBE here & don’t forget to turn on your notifications 🔔-    / @byjusclass910   💺 Book your Free Class for Grade 9th (Limited Seats): https://byjus.com/byjus-classes-book-... 🚀 *IMPORTANT PLAYLISTS & SESSIONS:* ✔📚Check Out the Playlist for Chemistry Class 9:    • Chemistry Class 9th | Videos For Batch 202...   ✔📚Check Out other Playlists for Class 9: https://www.youtube.com/c/BYJUSClass9... ✔📚Check Out Playlists for Exciting Experiment Shorts:    • BYJU'S Experiment Shorts | Science Experim...   ✔📚Check Out Playlists for all important strategies:    • General Strategy Sessions   00:00 Atoms and Molecules Class 9 Science (Chemistry) One Shot 4:16 ANTHE - Aakash National Talent Hunt Exam 7:23 What do they all have in common? 8:21 All about Matter 9:11 About Atoms 10:19 What is Democritus? 12:03 Aristotle Said about Matter 13:20 Antoine Laurent Lavoisier 16:09 Joseph Louis Proust 16:40 Laws of Chemical Combination 18:05 Law of conservation of Mass 23:10 Law of constant proportions 27:20 Dalton’s Atomic Theory 28:25 Postulates of Dalton’s Atomic Theory 34:57 Q. How much amount of NH3 is produced when 28 g of nitrogen completely react with 6 g of hydrogen? 40:24 What is an Atom? 41:50 Everything Around Us Is Made up of Atoms 43:13 Did You Know? - Fact 45:03 Q.If everything is made up of atoms, then why do they look different from each other? 45:52 Different Substances are Made Up Of Different Atoms 46:56 About Elements 47:59 Atomic Symbols 52:07 Berzilius System 59:28 Do Atoms Exist Independently? 1:01:42 Molecules - Atoms 1:05:11 Atomicity 1:07:00 Q.Determine the atomicity of ammonia. 1:09:03 What is Ions? 1:12:02 Term of Valency 1:12:54 Valency of Mono-atomic Cations 1:15:58 Valency of Poly-atomic Ions 1:18:26 Ions of Different Valency 1:18:47 Break Time 1:24:23 Writing Chemical Formulae 1:24:58 Rules for Writing a Chemical Formulae 1:30:23 Formulae of Simple Compounds 1:34:22 Important Case - Zinc Oxide 1:36:15 Q. Which of the following represents a correct chemical formula? 1:40:40 Matter has mass, and so do atoms! 1:43:33 Relative Atomic Mass 1:46:44 Molecular Mass 1:47:21 Let’s Calcualte the Mass of Molecules 1:48:09 The Molecular Mass of HNO3 is 1:49:47 Formulae Unit Mass 1:53:19 About Telegram 1:53:41 Subscribe BYJU’s Channels #BYJUSClass9 #BYJUSClass9Science #BYJUSClass9Chemistry #atomsandmolecules #atomsandmoleculesclass9 #atomsandmoleculesclass9fullchapter #atomsandmoleculesclass9questionsandanswers #atomsandmoleculesclass9solutions #atomsandmoleculesclass9questions #class9scienceatomsandmolecules #atomsandmoleculesclass9mcqs #atomsandmoleculesmcqs #mcqonatomsandmoleculesclass9 #class9science #class9chemistry #class9sciencechapter3 #cbseclass9 #class9exams #class9preparation