👉 Practice Sheet - Go to Batch - Subject Section - Open DPP PDF Section. 📕 SPRINT Class-9th - physicswallah.onelink.me/ZAZB/0y4x6bma 📕 Telegram For Quizzes:- t.me/foundationwallah
GIVE ATTENTION PW I have such problems in my life. Iam study in class 9 and I want to taught to you personally for my career. My English is week any mistake in my English please ignore it 🙂
Class 9 new family ❤ Please vote for making videos again for new students... All the best for top the class because if u r here in beginning of class then u r a sincere student 😊😊
Listen me I am also a student of class 9 and scored 98.5 percentage in class 8 Please focus on studies...It is beginning of time of disaster in life...Many people will meet you which u like and hate but u should be focus on ur aim if u don't decide ur aim then decide and find a reason.... Please don't upset ur parents by some problems... Choose a person who is perfectly able for solving life problems... Don't go close anyone....Stay away from guys....Skip all those people who always demotivate u and add those people in ur life who motivates u.... Avoid toxic things ....Be sincere for ur parents friends for u for ur studies for ur career And never demotivate be your marks because a mistake of a sincere student is not a fault but a step for improving more.... Ur friend Sincere student
4:08 NO THEY ARE NOT A MATTER 10:03 IT WILL REMIAN THE SAME 20:31 MOTION 36:07 KELVIN 1:02:38 CLEAR TILL NOW 1:18:01 OPTION C 1:19:29 OPTION C 1:20:41 OPTION C 1:21:27 OPTION B 1:22:21 OPTION D 1:23:18 PARTICULATE NATURE OF MATTER MEANS THAT ALL MATTER ARE MADE UP OF PARTICLES SOME CHARACTERISTICS OF PARTICLE NATURE OF MATTER ARE 1. PARTICLES OF MATTER ARE VAERY SMALL 2. PARTICLES OF MATTER HAVE SPACES BETWEEN THEM 3. PARTICLES OF MATTER ARE CONSTANTLY MOVING 4. PARTICLES OF MATTER ATTRACT EACH OTHER 1:23:34 WE CONLUDE FROM THIS OBESRVATION THAT WHEN WE PUT CRYSTAL OF POTASSIM PERMAGNET IN WATER CRYSTAL OF POTASSIUM PERMAGNET BROKE INTO PARTICLES WHICH FURTHER INTERMIX WITH PARTICLES OF WATER ON THEIR OWN. THIS INTERMIXING OF PARTICLES OF DIFFERENT MATTERS ON THEIR OWN IS CALLED DIFFUSION. 1:24:21 SUBSTANCE A MUST BE IN GASEOUS STATE SOME PROPERTIES OF GASEOUS STATE ARE: 1.NON FIXED SHAPE 2.NON FIXED VOLUME 3.FLUID 4.HIGHLY COMPRESSIBLE 5.MINIMUM FOA 6.MAXIMUN SPACE 1:25:06 DUE TO PRESENCE OF TINY PORES IN ICE THEY HAVE LOW DENSITY THAN LIQUIDS,THUS THEY FLOAT ON LIQUID. 1:26:00 THIS IS BECAUSE THE HEAT ENERGY PROVIDED AT B.P OR M.P IS USED BY PARTICLES TO OVERCOME FOA BETWEEN THEM AND CHANGE THEIR STATE.THIS HEAT ENERGY IS KNOWN AS LATENT HEAT OF VFUSION OR LATENT HEAT OF VAPOURISATION. 1:27:02 AMMONIUM CHLORIDE IS A SUBSTANCE WHICH SHOW THE PROPERTY OF SUBLIMATION SO WHEN IT IS HEATED IT DIRECTLY CHANGES TO GASEOUS STATE WITHOUT CHANGING TO LIQUID STATE WHERE AS WHEN SUGAR IS HEATED IT FIRST MELTS INTO LIQUID STATE AND THEN VAPORISE INTO GASEOUS STATE. 1:28:04 THE REASON BEHIND PUTTING STRIP OF WET CLOTH ON FOREHEAD OF A PERSON HAVING HIGH FEVER IS TO REDUCE THE BODY TEMPERTURE OF THE PERSON. THIS HAPPENS BECAUSE WATER IN CLOTH EVAPORATE BY USING THE HEAT ENERGY FROM THE PERSON'S BODY LEAVING THE BODY COOL. 1:29:11 RATE OF EVAPORATION WILL BE HIGH IN VESSEL C THIS IS BECAUSE OF PRESENCE OF LARGER SURFACE AREA AND HIGH WIND SPEED THAN OTHER VESSELS.
00:00 - Introduction 01:55 - Matter In our surroundings 07:56 - Characteristics of particles of matter 16:36 - Diffusion 28:22 - Solids, Liquids and Gases 35:51 - Unit of temperature 37:32 - Change in state of matter 38:26 - Changing the temperature 57:07 - Changing the pressure 1:02:43 - Evaporation 1:17:47 - Questions practice 1:30:08 - Thank You Bacchon
00:00 - Introduction 01:55 - Matter In our surroundings 07:56 - Characteristics of particles of matter 16:36 - Diffusion 28:22 - Solids, Liquids and Gases 35:51 - Unit of temperature 37:32 - Change in state of matter 38:26 - Changing the temperature 57:07 - Changing the pressure 1:02:43 - Evaporation 1:17:47 - Questions practice 1:30:08 - Thank You 😊
00:02 Matter is made up of tiny particles 02:30 Matter is anything with mass and occupies space. 07:15 Matter is made up of very small particles with spaces between them 09:34 Particles of matter have spaces between them 13:53 Particles of matter attract each other in different ways 15:51 Matter in different states exhibits different properties based on the attraction between particles. 19:43 Particles of matter have characteristics and properties. 21:35 Diffusion is a property based on the motion of particles. 25:19 Diffusion is the reason for the spread of aroma. 27:11 Diffusion increases with high temperature 30:45 Matter in different states have unique properties 32:45 Particles in solids, liquids, and gases have different levels of force of attraction. 36:34 Temperature in Kelvin is equal to Temperature in degrees Celsius + 273 38:43 Heating and cooling affect the states of matter. 42:30 Changes in states of matter explained 44:20 Melting and Boiling Points of Ice and Water 48:13 Latent heat of fusion is the heat required for a solid to change into a liquid. 50:01 Explanation of water temperature changes during heating and state change 53:42 Understanding changes in state of matter and associated temperature changes 55:22 Understanding energy of water and ice at 0 degrees Celsius 59:08 Gas particles liquefy under high pressure and low temperature 1:01:05 Sublimation is the process of solid directly changing into gas. 1:05:03 Particles of matter move randomly with different kinetic energy 1:06:52 Increased kinetic energy leads to change in state of matter 1:10:35 Water vapor condenses into liquid on cold surfaces and affects humidity. 1:12:17 Wind speed affects evaporation rate 1:15:55 Evaporation is higher on hot and dry days, resulting in more cooling. 1:17:53 Effect of pressure and temperature on states of matter 1:21:31 Particles of liquids are loosely packed compared to solids 1:23:19 Particles of different types of matter mixing is called diffusion 1:27:04 Sublimation of substances like sugar and naphthalene balls 1:28:46 Factors affecting evaporation and its impact on drying
Yaar 8th class ke exams ke doraan kon ye sochta tha ki exams k baad to bhai maze hi maze h 😂😂😂 but ab pata chal raha h 9th me aake ki 8th me hi thk the.........😢😢😢😢😢😢
The way she teaches is on the next level. We can understand her so well,.. She uses humor and knowledge and gives us the perfect teaching.. She is a real teacher who can actually make her students understand. Thank you so much pw for providing such teachers.. hats off 🥰😇😇
Introduction 01:55 - Matter In our surroundings 07:56 - Characteristics of particles of matter 16:36 - Diffusion 28:22 - Solids, Liquids and Gases 35:51 - Unit of temperature 37:32 - Change in state of matter 38:26 - Changing the temperature 57:07 - Changing the pressure 1:02:43 - Evaporation 1:17:47 - Questions practice 1:30:08 - Thank
#matter :anything that occupy space and have mass #particles of matter : they are very very small part of matter #characteristics of particle of matter :they are very small, they attract each other, they have space between them. #diffusion :it is the property of matter which is based on movement of particles #movement of particles increase when they are at high temperature
Mam moving . For example - when we spray perfume the particles of perfume moving on air and mixing with particles of air and spread the smell of perfume in the whole room
20:15 The particles of matter which are very small, which have spaces between them and that attract each other correctly describes diffusion. The reason for this is that in diffusion the particles mix with each other on their own and the property of particles of matter that attract, that enter the small spaces of the other particles due to their small size and mix with each other correctly describes this process.
Mam you teach very good but I don't understand the topic change in pressure can you please make a separate live video for doubts it's a humble request 🙏🙂
20:31 [ 3 ] Moving { Particles are constantly moving - example of Diffusion } although i think that we need option 2 as well because if they are no spaces how they are going to get intermix .
অক্ষয়ের পরিবর্তে অন্য কেউ এটি একটি কথা বলেন এবং এ বিষয়ে বিস্তারিত জানতে লাইক দেন এই কথাটা কি আমার কথা বিশ্বাস করে এ ছাড়া অন্য কেউ এগিয়ে আসতে আসতে ওর চোখ খুলে দেখি আমার এই ক্ষুদ্র এই কথা বলে আর দেখিয়ে দিল আমার ঠোটে আমার এই কথাটা আমি
Kon 8th class khatam hone ke baad yaha aaya hai or soch raha hai ke youtube se padh ke school me jaake jo bhi teacher puchega vo phata phat bata denge 😂😂😂
@@koushik1947 you are saying just because in icse almost every questions are from book and without any changes But in cbse every questions are very tricky and difficult to understand
