8th Science | Chapter 9 Matter Around Us Basics | TN State Board | Prakash Sir

Added: 2026-06-10

[00:00:04]Hello.

[00:00:06]Good evening my dear warriors.

[00:00:09]Welcome back. Yes. How are you guys?

[00:00:18]Cute little soldiers.

[00:00:20]Yes.

[00:00:22]Good evening. Good evening. Good evening.

[00:00:28]Good evening. I'm audible audio.

[00:00:39]Good evening. Good evening.

[00:00:42]Good evening. Am I audible? Yes.

[00:01:01]present. Yes. Welcome back.

[00:01:05]Yes.

[00:01:10]Mark your attendance.

[00:01:12]Attendance.

[00:01:26]Commerce. Bash will be started 10th.

[00:01:38]Jani Koshika Shivata very good. Sangeita.

[00:01:44]Okay. Jri Abinri Tanojita.

[00:01:50]Good. Great. Great. Great. Very good.

[00:01:52]Welcome back. Welcome. Welcome. H.

[00:01:56]Superhik good.

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[00:02:21]Batches. We are searching on it. Very soon we will do it. Huh?

[00:02:27]I'm not sure.

[00:02:30]We are planning. We are vigorously searching.

[00:02:34]So, we are planning to start. Okay.

[00:02:38]Right.

[00:02:46]Measurements.

[00:03:01]Oh my god.

[00:03:05]Okay. Good. Okay. Good. Super. Good.

[00:03:09]Good. Good. Good. Very good. So, school.

[00:03:16]What's going on in your school?

[00:03:20]Activity competition.

[00:03:26]Yes. Yes. Yes.

[00:03:30]Any competitions or anything? Yes.

[00:03:50]So there is no class.

[00:03:57]Okay.

[00:03:59]Very good. Super matter around us.

[00:04:15]Ethand unit around us. Chemistry first chapter.

[00:04:27]Chemistry first chapter nth stand unit.

[00:04:40]Unit 10.

[00:04:43]Next level stand.

[00:05:16]Yesterday science class.

[00:05:34]Okay. Right.

[00:05:37]N standouate.

[00:06:05]for 8 Nuckth p.m.

[00:06:50]Okay.

[00:06:59]Right.

[00:07:02]Okay. Right. So eighth standard is very very important.

[00:07:19]Right. Right. So matters first what is matter? Matter matter is anything that has mass and occupies space. Matter is anything that has mass and occupies space.

[00:07:58]and occupies space. Example, solid, liquid, gas are forms of matter.

[00:08:05]They are all matter.

[00:08:15]So, light is an energy.

[00:08:19]solid, liquid, gas, matter.

[00:08:25]Okay. Right.

[00:08:27]Atoms atoms are building blocks of matter.

[00:08:50]So atomsid.

[00:08:58]So atoms are building blocks of matter.

[00:09:02]Building blocks. Building block building blocks.

[00:09:10]Molecules are formed by atoms. So building for example single single atom single wall is a combination of brickscle Charged atoms or group of atoms are called ions.

[00:09:56]You can write it as hydrogen, oxygen, nitrogen.

[00:10:02]atom.

[00:10:14]H2O NH3 ions ions charged H+ O2us Nus1 They are going to be called as ionstole.

[00:10:51]It is a building block of matter.

[00:10:56]Okay.

[00:10:59]elements.

[00:11:01]What is meant by elements? Elements element is a pure substance that cannot be broken down by chemical methods.

[00:11:11]Element for cannot be broken down into chemical reaction. Broken chemical methods.

[00:11:25]Chemical method elements contain only one type of atom.

[00:11:31]One type of Okay.

[00:12:19]10th.

[00:12:25]So elements can contain only one type of atom. For example, nucleus number of protons. Number of protons. For example, hydrogen. Hydrogen for example atomic number.

[00:13:10]Okay.

[00:13:13]So proton and moon atomic number represents the number of protons. atomic number first.

[00:13:52]Okay.

[00:13:54]Atomic number represents the number of protons present in the nucleus of an atom. Number of protons.

[00:14:21]What did you show?

[00:15:05]Science classroom.

[00:15:12]Saturday night.

[00:15:14]Saturday night. Saturday night.

[00:15:23]700 students.

[00:15:34]Students.

[00:15:36]for 11.

[00:15:57]Okay.

[00:16:10]Okay. Super good. Very good. Very good.

[00:16:27]Okay.

[00:16:29]foreign.

[00:16:36]Okay.

[00:16:53]Oh brother.

[00:16:55]Okay. Danushi present. Okay. brother to come.

[00:17:13]Shia 10th standard 10th already.

[00:17:31]Back pain.

[00:18:01]upcoming morning class. Super good.

[00:18:48]10 minutes special 54.

[00:19:04]Okay, super symbols of the elements.

[00:19:34]plus oxygen gives water for hydrogen plus oxygen gives H2 method.

[00:20:04]water.

[00:20:16]Ancient Greeks used the symbol of fire and water.

[00:20:25]Fire symbol.

[00:20:49]They called as alchemist. Alchemist.

[00:21:05]Alchemist used special symbol while attempting to convert metals into gold.

[00:21:11]metal symbol John Dton one of the greatest scientist introduced a pictorial symbol for the elements in 1809 9 2026 200 years pictorial Brazilious Yes.

[00:22:06]Modern letterbased symbol system. Oh, modern letterbased symbol system. Let us base introduce letters and based symbols.

[00:22:30]Elements with first letter symbol.

[00:22:54]Boron. Boron. B. Carbon.

[00:23:01]Capital C.

[00:23:07]Florine.

[00:23:15]Florine. Yeah.

[00:23:18]the hydrogen.

[00:23:24]Hydrogen H.

[00:23:26]Iodin.

[00:23:36]Nitrogen.

[00:23:41]Nitrogen.

[00:23:49]Nitrogen, oxygen.

[00:23:58]O capital P and the sulfur.

[00:24:21]Yes.

[00:24:23]Brenadium.

[00:24:31]V.

[00:24:33]Uranium.

[00:24:53]These are small examples.

[00:25:05]for single Single two letters elements with same first letter.

[00:25:42]First letter. Second.

[00:25:46]First letter.

[00:25:50]118.

[00:26:06]So you can do it.

[00:26:09]Aluminium. Aluminium.

[00:26:16]Aluminium.

[00:26:23]Berilium.

[00:26:28]Sorry.

[00:26:31]B. Berium.

[00:26:36]Aluminium.

[00:26:38]Berium.

[00:26:39]Berilium.

[00:26:44]Berium.

[00:26:57]Broman 7:00 bro cobalt cobalt co helium H E nickel silicon sodium sodium Okay.

[00:28:04]for supern No.

[00:28:32]Silicon, nickel, same two letters.

[00:28:41]Same two letters.

[00:28:44]First letter.

[00:28:50]Small brother. Small brother.

[00:28:53]Small brother.

[00:29:21]So elements with the same to the letter A r a r a r ar ar ar ar ar ar ar ar ar ar ar ar ar ar ar ar ar ar ar argon argon as s arsenic chlorine First letter. First same chromium. CHium CD. Cadmium.

[00:30:21]Mg Mg Magnesium.

[00:30:35]Magnesium Manganesees.

[00:30:44]So first same first two letter C L C R C A C D MG M first letter third.

[00:31:38]Okay. Hi.

[00:31:45]Okay. Did not understand.

[00:32:06]First letter. Second. First letter.

[00:32:37]for sure.

[00:35:26]Okay. Ba. Right.

[00:35:55]YouTube.

[00:36:13]Okay. K, potassium.

[00:36:41]Cra, Latin names, Latin names, Argentum Argent silver.

[00:37:25]A U R R U M RMury symbol. Mercury Mercury.

[00:37:52]Mercury hydrogum.

[00:38:00]Hydrogum PB.

[00:38:04]Plumb right.

[00:38:14]Snontium.

[00:38:21]Strong.

[00:38:26]SN stibium.

[00:38:37]Antimony.

[00:38:48]forite from another tungsten tungsten. Wolfro tungsten tungsten tungsten.

[00:39:18]Okay. Right.

[00:39:21]12th night. 12th night.

[00:39:41]They cannot do it. So elements scientist country, Europe, noium, plutonium, Neptunium, uranium.

[00:40:11]for symbols.

[00:40:36]Single letter.

[00:40:45]First letter capital. Second letter small.

[00:40:52]First single letter.

[00:40:59]Two letter.

[00:41:01]First letter capital. Second letter.

[00:41:05]Capital small. Capital small. Capital small. Capital small. Capital small.

[00:41:09]Capital small. Capital small. Capital small.

[00:41:13]H. Right.

[00:41:16]Walung.

[00:41:24]That is very very important.

[00:41:31]Elements. elements.

[00:41:37]Next What are the things taught in the class?

[00:42:01]I have a doubt.

[00:42:06]Basics complete name in Latin. Latin.

[00:42:24]Latin name.

[00:42:58]Okay.

[00:43:03]School. How is your school? Any festivals?

[00:43:08]Plant anatomy.

[00:43:18]8 p.m. No.

[00:43:33]7 p.m. no live. I want to tell you that there is no live in 7 p.m.

[00:43:46]Okay. Right. So you can take rest.

[00:44:01]minutes. Five minutes.

[00:44:22]Oh my god. Morning breakfast.

[00:44:27]Morning breakfast.

[00:44:48]Telegram.

[00:45:43]Morning breakfast. Morning.

[00:45:49]Right. Tada. Bye-bye. See you. Okay.