This chemistry video tutorial shows you how to identify an ionic compound as acidic, basic, or a neutral salt. You need to know the 6 common strong acids such as HCl, HBr, HI, HNO3, H2SO4, and HClO4. The conjugate base of a strong acid is a neutral anion. The conjugate base of a weak acid is a basic anion. This video contains plenty of examples and practice problems. Here is a list of compounds included in this video: KCl, NaOH, NH4Cl, AlBr3, NaF, FeCl3, KH, KI, LiNO3, KNO2, LiC2H3O2, CuSO4, K3PO4, LiI, NH4NO3, CaO, AlCl3, NaClO, Na2CO3, Ba(OH)2, Na2SO4, K2SO3.

Acids and Bases - Introduction:
https://www.youtube.com/watch?v=FM2MpMbV0rw

The 7 Strong Acids to Memorize:
https://www.youtube.com/watch?v=AaYQ_ZiE7AY

Conjugate Acid-Base Pairs:
https://www.youtube.com/watch?v=OP6RKqSp1Xw

pH and pOH Calculations:
https://www.youtube.com/watch?v=OEW4-Sfyvik

Estimate The pH Without a Calculator:
https://www.youtube.com/watch?v=Mgph6gmIuwg

_______________________________
Autoionization of Water - Kw:
https://www.youtube.com/watch?v=ID5K1Yt7Yho

Which Acid Is Stronger?
https://www.youtube.com/watch?v=PdqFSw_SRug

Acidic, Basic, & Neutral Salts:
https://www.youtube.com/watch?v=-6Pxr7SRgeo

pH of Weak Acids:
https://www.youtube.com/watch?v=kJTCuRSeh6g

Buffer Solutions:
https://www.youtube.com/watch?v=kBzPTEB21Po

_________________________________
Polyprotic Acid Base Equilibria:
https://www.youtube.com/watch?v=nXugjkSQtTI

Acid Base Titration Curves:
https://www.youtube.com/watch?v=LNG9rhmBu8E

Acids and Bases - Practice Test:
https://www.youtube.com/watch?v=hmGPK0cuO7o

Ksp - Molar Solubility & Ice Tables:
https://www.youtube.com/watch?v=kO-9OajoPZs

Complex Ion Equilibria:
https://www.youtube.com/watch?v=nkiMFM19yNE

___________________________________
Gibbs Free Energy, Entropy & Enthalpy:
https://www.youtube.com/watch?v=2KuNzB0cZL4

Entropy - 2nd Law of Thermodynamics:
https://www.youtube.com/watch?v=lN66F9V7-_Q

Electrochemistry Practice Problems:
https://www.youtube.com/watch?v=S9frctwDyL0

Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
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Chemistry PDF Worksheets:
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Former teacher and Khan Academy Kids team member Miss Aimee shares her tips for developing a schedule for learning and playing at home.

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The Languages in the K-12 Programs
Video #1
By: Emerald May A. Francisco
III-CC2

Discover what the four types of sentences are with Oliver, Chloe, Bella, and Elvis, as they take you around the petting zoo. The declarative Oliver never stops making simple statements and doling out information, while the interrogative Chloe has a never-ending list of questions. The imperative Bella can’t stop commanding or requesting, and the Exclamatory Elvis is a hoot with his excited utterances. With loads of examples briskly hopping in from every nook and cranny of the petting zoo in this video, identifying the types of sentences or differentiating between them will no longer be a Herculean task for kids. Learn to use appropriate punctuation marks: a period for declarative sentences, a question mark for interrogative sentences, and an exclamation point for exclamatory sentences. Get on board right away, ‘coz there’s so much to do at the petting zoo!
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For this video I went off the coast of South Australia to an island frequented by great white sharks. Here they hunt seals and fish. I've never been scuba diving before but I got into a cage and filmed the sharks under water. It was an incredible experience. Then we came back on the surface to tag the sharks.

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What are you waiting for? Have you ever wondered where we obtain everything we need? 🤔
Food🥕🥝🥦🍗... Clothes... 👚🛍️👔
Today We're going to learn about how we obtain SERVICES!!!
How does it all work?! Well it's easy peasy 😉

💭Who can tell me what two groups society is divided into?
👇 Answer in the comments below!

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Recommended video: Jobs and their classification
https://youtu.be/GuzmULmcU0E
-----

Hello friends, welcome to a new happy learning video. We already know that jobs are divided into three sectors. The Primary sector, extracts raw materials from nature, the Secondary or manufacturing sector, transforms raw materials into elaborated or semi elaborated products and the tertiary or service sector, is the one we are going to learn about today.

The tertiary sector are jobs where the products made in the secondary are sold to us, or offering us a service. So you understand it better, we’re going to look at two examples.

In a shop, they sell us products in exchange for money, like food or clothes. In a hairdressers, however, they don’t sell us a product, they cut our hair so we look beautiful, they offer us a service in exchange for money. These activities, both those who sell us a product and those who offer us a service are part of the tertiary sector.

Let’s get to know various kinds of economic activities, or jobs which are in the tertiary sector. You’ll see some are suuuper important.

Welfare is in charge of looking after our health. Doctors and nurses work hard to take care of us if we’re sick. It’s a super important sector, Don’t you think?

Education is also suuper important. Teachers work in schools to teach students knowledge and values. Thanks to education, we’ll be able to reach a greater world in the future, cleaner and with greater justice.

Transport is also a service. Taxis, buses, lorries, trains, boats and planes, transport goods, animals and people, from one place to another. The bus which takes us to school is part of this sector.

Communication is another crucial type of service nowadays. The internet or mobile phones allow us to communicate from great distances.

And finally, trade. Shops where we can buy everything we need, food, clothes, anything! When trade is made within the country, it’s called domestic trade, but when it’s done between countries, it’s called international trade. If our country buys products from other countries, we call it import. But if our country is the one to sell their products, we call it export.

There are more jobs dedicated to the service sector, like tourism, banks, restaurants, but there’s one which we love, entertainment! The Cinema, theatre, football or attraction parks all make us have lots of fun in our leisure time.

There are lots of types of jobs in the tertiary sector, don’t you think? And some super fun ones!


Do you want to get to know more about the different jobs in the tertiary sector? Do you want to know what imports and exports are?
You do? Well click on this link and you’ll be able to watch the whole video on Happy Learning Tv, I’m sure you’ll get an excellent grade in your exam.

Goodbye Happy friends, see you in our next video!

This physics video tutorial explains how to solve any resistors in series and parallel combination circuit problems. The first thing you need to do is calculate the equivalent resistance of the circuit which you can use to calculate the current flowing from the battery based on ohm's law. Using the current and the voltage drops across each resistor, you can calculate the electric potential at every point in the circuit which will allow you to calculate the current flowing through any resistor. This technique is useful if there's not multiple batteries in different loops of the equation. Keep in mind, the current flowing in two resistors that are in series with each other is the same. The voltage is the same across resistors connected in parallel. This video contains plenty of examples and practice problems including a current division formula for resistors connected in parallel.

Schematic Diagrams & Symbols:
https://www.youtube.com/watch?v=Dl1gFBNa0Ik

Resistors In Series:
https://www.youtube.com/watch?v=9z53qVQjasU

Resistors In Parallel:
https://www.youtube.com/watch?v=SYrOiQs3X2U

Series and Parallel Circuits - Light Bulb Brightness:
https://www.youtube.com/watch?v=NjgxXcBfIII

Equivalent Resistance of Complex Circuits:
https://www.youtube.com/watch?v=kjW4H3fKi8o

_________________________
Voltage Divider Circuit:
https://www.youtube.com/watch?v=JGXdi7XcQi8

Current Dividers:
https://www.youtube.com/watch?v=PpfOH_uBKCw

Parallel Circuit Challenge Problem:
https://www.youtube.com/watch?v=y-gwr8LCHKo

Kirchhoff's Current Law:
https://www.youtube.com/watch?v=Q39xQUlTGew

Kirchhoff's Voltage Law:
https://www.youtube.com/watch?v=6F_rmZ1nXFQ

DC Circuits Review:
https://www.youtube.com/watch?v=wejz5s31Cts

____________________________
KCL and KVL Circuit Analysis:
https://www.youtube.com/watch?v=2Zu3ppq3n8I

Thevenin's Theorem - Circuit Analysis:
https://www.youtube.com/watch?v=zTDgziJC-q8

Norton's Theorem - Circuit Analysis:
https://www.youtube.com/watch?v=-kkvqr1wSwA

Superposition Theorem:
https://www.youtube.com/watch?v=EX52BuZxpQM

Maximum Power Transfer:
https://www.youtube.com/watch?v=8CA6ZNXgI-Y

Physics PDF Worksheets:
https://www.video-tutor.net/ph....ysics-basic-introduc

Thanks to Established Titles for sponsoring this video! Get 10% off on any purchase with code SimpleHistory. Go to https://establishedtitles.com/SimpleHistory and help support the channel!


Everyone is familiar with the Hollywood version of medieval jousts. The handsome knight galloping towards his sworn enemy, lance steady and stern, while his lady’s handkerchief gently sits next to his heart. But have you ever seen a joust that used boats instead of horses? Knights who practised hitting targets hung from masts in rivers instead of in training grounds? Watch how even some of the painted Maya, viking raiders or pious monks staved off their boredom. Through some truly odd ball games, they might leave you baffled and confused, and yet still have a part of you wanting to try them out yourself

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Credit:
Created by Daniel Turner (B.A. (Hons) in History, University College London)
Script: Natasha Martell
Narrator:

Chris Kane
https://vocalforge.com/

Sources

Barber, Richard, and Juliet Barker. Tournaments: Jousts, Chivalry and Pageants in the Middle Ages. New York: Weidenfeld & Nicolson, 1989.
Brand, Jonathan. “Jeu de Paume: Holding Court in Paris”. Smithsonian Magazine, May 18th 2010.
Coss, Peter, and Maurice Keen. Heraldry, Pageantry and Social Display in Medieval England. Gateshead: Athenæum Press Ltd, 2003.
Cummins, John. The Hound and the Hawk: The Art of Medieval Hunting. New York: St Martin’s Press, 1988.
Cybulskie, Danièle. “Sports in Medieval London”. Accessed 7 June 2022.
Davies, Diane. “Ballgame – Pok-ta-Pok”. Accessed 7 June 2022.
Gillmeister, Heiner. Tennis: A Cultural History. Bristol: Equinox Publishing, 2017.
Gogosz Remigiusz. “Horse Fights: The Brutal Entertainment of the Icelanders in the Middle Ages”, Średniowiecze Polski i Powszechne (2014) pp. 17-32.
Henricks, Thomas S. “Sport and Social Hierarchy in Medieval England”, Journal of Sport History, Vol. 9, No.2 (1982) pp. 20-37.
Hjaltialin, Jon A. “On the Cvilisation of the First Iceleandic Colonists, with a Short Account of Some of Their Manners and Customs”, Transactions of the Ethnological Society of London, Vol. 6 (1868) pp. 176-182.
Kowaleski, Maryanne. “Medieval Towns: A Reader” (22 August, 2008).
Oggins, Robin S. The Kings and Their Hawks: Falconry in Medieval England. New Haven: Yale University Press, 2004.
Pattie, Tammy. “Medieval Games and Recreation”, Eastern Illinois University, (2011) pdf.
Scarborough, Vernon L. The Mesoamerican ballgame. Tucson : University of Arizona Press, 1991. Archive.org.
Thurber, B. A. “The Viking Ball Game”, Scandinavian Studies, volume 87, No.2 (2015) pp. 167-188.

https://www.patreon.com/homeschoolpop I'm so thrilled to have you here! Learn all about long division in this math video! We'll start with a brief review of division, then move on to basic long division problems. I'll teach you a trick to remember the steps of long division and then review special long division problems with remainders and a triple-digit dividend!

00:00 What Is Long Division
0:40 Quick Division Review
4:02 Easy Long Division Example
7:28 Long Division Steps
8:31 Another Simple Long Division Example
11:17 Long Division With a Remainder
14:26 Triple-Digit Long Division
18:28 Final Long Division Review

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Thanks for watching!
I hope to see you next video!

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"Homeschool Pop"

Least Common Multiple: Prime Factorization Method
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This video walks you through the step-by-step process of comparing mixed numbers or comparing mixed fractions.

In this video we cover:

What are mixed numbers?
Using cross multiplication (or the butterfly method) to evaluate mixed numbers
Equivalent Fractions
How to compare mixed numbers using cross multiplication

Share this video with a friend: https://youtu.be/16WqQTdV-_o

Other Videos Mentioned:
Equivalent Fractions: https://youtu.be/Y_xJugQN3AM

Check out my post and free printable worksheet on comparing mixed numbers here: https://improvedmath.com/how-t....o-compare-mixed-numb


Improved math is a channel created to provide additional instruction on essential math concepts. I’m not a math teacher, I’m an accountant. I know firsthand how important math concepts are in the real world.

Teachers, parents, guardians, homeschoolers, and students can use these videos to help reinforce math skills.

For more information on math topics or for free additional resources, you can also visit my website at improvedmath.com

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Don’t forget to like, share, and subscribe!

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Sing-along phonics song for kindergarten and babies that help teach the ABC. 🤩 Learn letter sounds, the English alphabet, and more, all with easy and fun phonics song and nursery rhymes for babies and children! 📌 Join us for our phonics song for kids with Lucas and Ruby by RV AppStudios.

Help your preschool or kindergarten age kid learn the ABCs the easy way with these adorable, safe, and captivating phonics song. 🌟 Some children struggle learning the Phonics sounds of alphabets, but with the right lessons, it’s easy for kids of all ages to pick up basic letter sounds and words. 📖

This 4K ultra HD video teaches children their ABC and certain phonics sounds of alphabets a to z with simple songs and nursery rhymes. ✔️ It stars two of our lovable mascots, as well: Lucas 🦁 and Ruby 🐰! Bring your kids into a world of colorful visuals and bright, cheery songs, all created with early education in mind. 🥇 It’s an easy way to learn the ABC phonic song with two words and the English alphabet, so why not start today?

🎯 RV AppStudios educational branch RV Kids is dedicated to creating free kids songs and nursery rhymes! 🔊 Be sure to LIKE and SUBSCRIBE for more great sing-along songs! 🔥

#Phonics #ABCD #NurseryRhymes

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What are you waiting for? Let's get on our bikes, on a trip back in time and let's learn how these great means of transport were made 🚴‍♀️

💭Which one of the first bicycles that existed would you rather ride??
👇Let me know in the comments bellow!
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Recommended video: The Wheel
https://youtu.be/XzG1aPw7YBc
-----------
The Bicycle: Great inventions that changed history.

Hello friends! Welcome to a new HAppy Learning Video! Today, in our section great inventions of history, we’re going to get to know… the bicycle.

The bicycle is one of the most fun means of transport there is! Also, it is very ecological, and very healthy! Since when we ride a bicycle, we do physical exercise!
But… do you know who, and when the bicycle was invented? No? Well, let’s find out!

The truth is, that alike many other inventions, the bicycle was invented in various phases and it was various people who intervened in its evolution until reaching the bicycle we know today!

Here you can see the first bicycle in history! It was invented by Karl Drais in 1817 but, it doesn’t look a lot like contemporary bikes, it didn’t have pedals and you had to push it with feet on the ground.

In 1861, the Frenchman Ernest Michaux thought of putting pedals on the front wheel, but because it didn’t balance correctly, people fell off and his idea didn’t succeed. But it was useful so in 1873, James Starley, an English inventor, would manufacture a bicycle with the front wheel a lot bigger than the back one. Although the falls from so high up were dangerous, he made it easier to drive them, so in 1873, Thomas Steven commenced the first trip around the world. He took three years to finish it.

In 1885, John Kemp Starley, James Starley’s nephew invented a safe bicycle. Because it had breaks, and was a lot lower, falls were less frequent and less dangerous. Exactly, it was more secure… he had created a contemporary bicycle. From this moment on, the bicycle became famous throughout the whole world. And it started to be used for Cirque shows, to travel or just to do sports. But… the bicycle’s history hasn’t ended, there are still new bikes being invented, like mountain bikes, race bikes, electric or some which won’t move no matter how fast you pedal, like at the gym… There are a lot of curious bicycles, like all of these… It’s clear that the bicycle is an invention which runs smoothly! So everyone let’s ride a bike!

Goodbye Friends, see you in the next Happy Learning video! Oh! And don’t forget to subscribe to Happy Learning Tv!

On Season 4 of the Theory and Practice podcast, hosts Anthony Philippakis and Alex Wiltschko explore the many aspects of what it means to be human in the new era of artificial intelligence: from communication to robotic surgery and decision-making.

In episode 1, Dr. Greg Corrado, Distinguished Scientist and Head of Health AI at Google Health, explains how to responsibly introduce AI into healthcare. AI has proven itself in detecting diabetic eye disease, managing the risk of cardiovascular disease, and even encoding medical knowledge to answer patient queries, among many new and exciting applications.

Greg discusses safety concepts in AI: bias, robustness, transparency, explainability, and groundedness. He also discusses developing and maintaining datasets reflecting real-world patient realities and values.

Following this conversation, Anthony and Alex discuss Brian Christian’s book “The Most Human Human.”

---

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Solve Equations with Fractions| Expressions & Equations | Grade 8

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4th Grade Vocabulary words in English defined. Class 4 English with simple definitions and kids will love the interesting format and variety of backgrounds. Mrs. Pencil hosts this public and homeschool classroom learning lesson. English speaking practice_____ Welcome to the Complete K12 Essentials Youtube channel!

visit our website to access interactive workbooks, games, and puzzles
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4th Class English vocabulary Part 8, lesson 8, workbook 8, chapter 8. English Vocabulary words with meaning. #vocabulary #englishvocabulary #learnenglish

Struggling with algebra? This quick video will give you the solid foundation you need to finally feel confident. For a complete course and more practice problems to continue your journey, visit our official website at https://UltimateAlgebra.com. In this single lesson, we'll give you the key to unlocking algebra and make every future math class easier!

Forget everything you thought about math being "difficult." This crash course is the clearest, most straightforward introduction you'll find. We break down the essential building blocks of algebra—from understanding what a "term" is to mastering the rules for multiplying, dividing, and handling exponents.

This guide is perfect for students feeling lost, parents wanting to help with homework, or anyone needing a quick and effective refresher on the core concepts.

⏰ TIMESTAMPS / VIDEO CHAPTERS:

00:00 - Your Solid Foundation in Algebra Starts Now
00:15 - The Building Blocks of Algebra (What are Terms?)
00:48 - The #1 Rule for Adding & Subtracting (Like Terms)
02:32 - What Happens with Unlike Terms?
03:06 - Combining Multiple Terms in an Expression
04:41 - Quick Recap of Key Vocabulary
04:58 - Multiplication and Division in Algebra
06:33 - Second Multiplication Example
07:40 - How to Divide in Algebra
09:27 - The 3 Core Exponent Rules
09:56 - The Product Rule (Multiplying Exponents)
11:06 - The Quotient Rule (Dividing Exponents)
12:36 - The Power Rule (Power to a Power)
14:18 - Understanding Radicals (Fractional Exponents)
16:03 - Example: How to Multiply Radicals
16:48 - Your Next Step to Mastering Algebra

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Important Algebra Videos
1.Algebra 1 for Beginners
https://www.youtube.com/watch?v=tTomwopxKFE
2. Easiest Algebra Lesson
https://www.youtube.com/watch?v=V3dFHt9p5W8
3. Solving Quadratic Equations
https://youtu.be/S9EN26HJqBw
4. Absolute Value
https://youtu.be/o_tk6iYz-WY
5. Understanding how to Solving Equations
https://youtu.be/sHTFUo3xRWQ
6. Dealing with Exponents
https://youtu.be/oL-pBONMW3o

Important GED Videos
1. Full GED Math Test - Best Video
https://youtu.be/LzqYrJtuh30
2. No Calculator GED Math Section
https://youtu.be/VnjbJLi7VL4
3. Complete GED Science Course
https://youtu.be/tlD1vt5SV-A
5. GED Social Studies
https://youtu.be/lEZKVMF_ofY

#Algebra #Math #AlgebraForBeginners #MathHelp #LearnAlgebra

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Is Earth the only living needle in this haystack of planets?

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Are there exoplanets like Earth? We live in one of a hundred billion of galaxies, each with hundreds of billions of stars. And now, thanks to modern astronomy, we know that the Milky Way is home to perhaps a hundred billion planets! In the past two decades, these exoplanet discoveries have spawned new questions about our universe, and if there might be another Earth, or other life, somewhere out there.

In part 1 of our two-part series on exoplanets, we'll look at how astronomers find exoplanets, and what it means to call them Earth-like. We'll trace the history of planetary science back three thousand years and examine Earth's changing status in the cosmos. We were once the center of the universe, and now Earth is just another rock in the sky. What does that mean for us?

Check out "Five Billion Years of Solitude" by Lee Billings: http://amzn.to/18Tzv59

This week's t-shirt comes from Wowch: http://www.wowch.com/puppyplanet

More reading:

There are five billion Earth-like planets in the Milky Way: http://www.nytimes.com/2013/11..../05/science/cosmic-c

The exoplanet catalog: http://phl.upr.edu/projects/ha....bitable-exoplanets-c

Methods of detecting exoplanets: http://en.wikipedia.org/wiki/M....ethods_of_detecting_

Interactive catalog of Kepler's exoplanet discoveries: http://www.nytimes.com/interac....tive/science/space/k

A philosophical and historical look at the exoplanet revolution: http://www.aeonmagazine.com/na....ture-and-cosmos/the-

The Kepler telescope and the "adjacent possible": http://nautil.us/blog/clever-a....pes-a-busted-telesco

How the Kepler telescope scanned the sky: http://www.itsokaytobesmart.co....m/post/62343351213/k

An ode to the late Kepler telescope: http://www.theatlantic.com/tec....hnology/archive/2013

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Communities for Kids - Types of Communities | Social Studies for Kids | Kids Academy

What are social communities? A social community is regarded as a group of people who live and work together in a particular area.

People belonging to a specific community also go to the same schools, offices, and hospitals. They are dedicated to helping each other in the time of need. They help them in solving their problems.

Families and friends are the most important part of social communities. We live with our family and we go out with our friends, and do the same type of things. Your neighborhood makes a community, and you will find a number of schools, libraries, offices, shops, and stores all in one place.

As a community, we should be aware of our role as community members, and we should become good citizens to play our role in the community.


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Introduction to simple machines, mechanical advantage and moments. Created by Sal Khan.

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