Learning Objective: Use the periodic table to write electron configurations for ions.

Topics: electron configuration, cation, anion

We need to talk about how to properly sanitize your pool water with either chlorine, bromine, salt, minerals, and even Baquacil (biguanide). It would be great if you could just fill your pool with water, not add any pool chemicals, and then never worry about the water becoming a gross breeding ground for nasty contaminants and organisms? Yeah, and maybe you could keep Nessie in your pool, too. But we don’t think she’s any good at pool chemistry. Let's dive in and keep the pool water sanitized correctly!

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⏰ Timestamps:
00:00​ - Introduction to How To Sanitize Your Water
01:22 - Chlorine Pros and Cons
02:14 - Chlorine Levels
02:34 - Salt Water Pools
02:52 - Chlorine Levels in Salt Water Pools
03:19 - Bromine Pros and Cons
04:06 - Bromine Levels
04:32 - Biguanide Pros and Cons
05:58 - Mineral System
07:01 - Salt Water Levels

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Swim University®️ has made swimming pool and hot tub care easy for more than 10 million homeowners. And each year, we continue to help more people with water chemistry, cleaning, and troubleshooting. We know taking care of a swimming pool or spa can be difficult. And it’s hard to find a trusted source of information. We get it! This is the reason we created Swim University®️.

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Learning Objective: Learn about scientific notation, significant figures, and how to report and calculate scientific measurements to the correct digit of uncertainty.

Topics: rules for significant figures, leading zeros, trailing zeros, interior zeros, scientific notation

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Naming compounds have never been so simple! With my strategy and step by step examples, you will be naming compounds like a pro in no time! This video explains every single type of ionic compound rule and covalent compound rule you will see and there are even practice problems to lock in what you just learned.

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📕 Thermochemistry Guide
https://melissa.help/thermonotes
📗 Acids and Bases Guide
https://melissa.help/acidbase1notes
📘 Naming Compounds and Acids Guide
https://melissa.help/namingnotes
📙 Dimensional Analysis, Significant Figures, and Density Guide
https://melissa.help/sigfignotes
📕 Gas Laws Guide
https://melissa.help/gaslawsnotes
📗 Stoichiometry Guide
https://melissa.help/stoichnotes
📘 Redox Reactions Guide
https://melissa.help/redoxnotes
📙 Molarity Guide
https://melissa.help/molaritynotes
📕 Limiting Reactants Guide
https://melissa.help/limreactnotes
📗 Lewis Structures Guide
https://melissa.help/lewisnotes
📘 Kinetics Guide
https://melissa.help/kineticsnotes
📙 Titrations Guide
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📕 Matter, Atomic Structure, Empirical and Molecular Formulas Guide
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💁‍♀️ HI I'M MELISSA MARIBEL
I help students pass Chemistry and Organic Chemistry. I used to struggle with this subject, so when I finally graduated with a bachelor's degree in Chemistry, I became a tutor so that you wouldn't have to struggle like I did. I know that with the right help, YOU CAN LEARN ANYTHING!

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Practice problems with step by step answers:
http://bit.ly/2YGSkX5

TIMESTAMPS
1:13 Naming Strategy
1:53 Ionic Compound Naming Rules
9:49 Covalent Compound Naming Rules Example
11:49 Practice problems

___________________________________________________________________
Music: [China Electro] China-P (Morocco No Copyright music) - https://youtu.be/uDkddvltoUk
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This is a video that I've been wanting to do for a while and I did my best to cover some of the fundamentals of safety. However, there are still plenty of things that I couldn't include and this will not at all prepare anyone to jump into practical chemistry.

References
• Glove compatibility: https://bit.ly/2Wmajlc
• Incompatible chemicals: https://bit.ly/2z70dg3
• Important safety glasses info: https://bit.ly/3c6w2V4
• Info about working alone: https://bit.ly/2Sw4PmM
• Chemical storage info: 1) https://bit.ly/2yspXDx 2) https://bit.ly/2ygcfUt
• News stories: 1) https://bit.ly/2SzUuq0 2) https://bit.ly/2WpBD1X 3) https://bit.ly/2W1wNJ7

This chemistry video tutorial provides a basic introduction into oxidation reduction reactions also known as redox reactions. This video explains how to identify the substance that is oxidized and reduced. In addition, it explains how to determine which compound or element is the reducing agent and which is the oxidizing agent. Combustion reactions and single replacement reactions are always redox reactions. Double replacement reactions such as precipitation reactions and acid base neutralization reactions are never redox reactions. Combination / Synthesis and Decomposition reactions may or may not be redox reactions.

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Stoichiometry Practice Test:
https://www.youtube.com/watch?v=mP2Yg8alyR0

Solute, Solvent, & Solution:
https://www.youtube.com/watch?v=MDHlaTHbEgM

Strong & Weak Electrolytes:
https://www.youtube.com/watch?v=2U2DBWWo6nc

Molarity Practice Problems:
https://www.youtube.com/watch?v=o_iETsDSvkg

Ion Concentration In Solutions:
https://www.youtube.com/watch?v=H5S4TRAzXhQ

Dilution Problems:
https://www.youtube.com/watch?v=FPidlCmymVg

___________________________________
Types of Chemical Reactions:
https://www.youtube.com/watch?v=iIJD8RNLpS0

Solubility Rules:
https://www.youtube.com/watch?v=LnGIKtx_udE

Predicting The Products of Reactions:
https://www.youtube.com/watch?v=MYmrWHzT1oI

Activity Series of Metals:
https://www.youtube.com/watch?v=VatDpKMJ-BU

Will This Reaction Occur?
https://www.youtube.com/watch?v=ACSKrg2RBmY

Predicting Products of SR Reactions:
https://www.youtube.com/watch?v=s4OFBa7Uans

___________________________________
Double Replacement Reactions:
https://www.youtube.com/watch?v=d8vWIGf2mGE

Net Ionic Equations:
https://www.youtube.com/watch?v=0jhNouV9TNo

Writing Chemical Equations From Words:
https://www.youtube.com/watch?v=npyvZSBqyc0

Solution Stoichiometry:
https://www.youtube.com/watch?v=Ab3wfKjaWWQ

Molarity & Dilution Problems:
https://www.youtube.com/watch?v=-4E6rOkiw2I

Acid Base Neutralization Reactions:
https://www.youtube.com/watch?v=UfTJrAPjeys

____________________________________
Acid Base Titration Problems:
https://www.youtube.com/watch?v=HJvALCcKYAc

Mixture Problems:
https://www.youtube.com/watch?v=e2FAAMlAJ3c

Calculating Oxidation Numbers:
https://www.youtube.com/watch?v=j0hI-a6EWWo

Oxidation and Reduction Reactions:
https://www.youtube.com/watch?v=dF5lB7gRtcA

Balancing Redox Reactions:
https://www.youtube.com/watch?v=fdbrhQAM9Gw

Ideal Gas Law Problems:
https://www.youtube.com/watch?v=iaZ96KaQ44c

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

كيمياء 101
الشابتر الأول Mateer and Measurements
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A clean hot tub isn’t just about adding sanitizer. If you don't add in the right amount of hot tub chemicals in the right order at the right time, you’re going to end up with some funky hot tub water. But don’t worry: the secret to keeping your hot tub alkalinity and hot tub pH balanced is knowing a little basic water chemistry.

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⏰ Timestamps:
00:00 - Introduction to Hot Tub Chemistry
00:45 - Hot Tub pH and Alkalinity
02:37 - Calcium Hardness
03:17 - Hot Tub Care Course
03:57 - Optional Chemicals
05:23 - How To Add Chemicals To Your Hot Tub

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Swim University®️ has made swimming pool and hot tub care easy for more than 10 million homeowners. And each year, we continue to help more people with water chemistry, cleaning, and troubleshooting. We know taking care of a swimming pool or spa can be difficult. And it’s hard to find a trusted source of information. We get it! This is the reason we created Swim University®️.

😎 Visit our website for more in-depth information on spa maintenance and care: https://www.swimuniversity.com/

https://poolsupplyworld.com/?utm_medium=organic&utm_source=youtube&utm_campaign=pool-chemistry-101

Learn about the 5 most important chemical levels in your swimming pool. Got questions? Email us directly at marketing@poolsupplyworld.com

Video Transcription:

Hey! Blake here from PSW and I’m back today to talk to you about Pool Chemistry 101. We’re going to cover the 5 chemicals in your pool so you. Its important to know what they are, what they do, and what the ideal range is - so you can have a trouble free swimming pool.

First we will dive in with Free Chlorine (or FC)
Free Chlorine is the sanitizer that is going to keep your pool safe and free of germs. When there is FC in your pool, its available to breakdown organic matter - like algae - to keep your pool safe. FC can be consumed one of two ways: by breaking down organic matter like algae, or it can burn off from the sun. For that reason, it is important to understand that you need to continuously replenish the FC level in your pool. The ideal FC level in your swimming pool will vary based on your CYA level, which we will get to in a minute.

Acidity (pH)
pH is the acidity level of your pool, so it will indicate how acidic or basic your pool is. It’s important to have it in the sweet spot because if it gets too low, it will burn your eyes or skin. If pH gets too high, it can damage metal components of your swimming pool. The ideal level is 7.4 to 7.8. You can lower pH by adding acid, or you can raise your pH level by using soda ash. We sell both of those products - we call them pH-UP and pH-Down - but you can also use muriatic acid, or dry acid to lower pH, and soda ash to raise it.

Total Alkalinity (TA)
TA stands for Total Alkalinity, which will buffer the changes in your pH level. If you have low TA, your pH level is going to be wild going up and down a lot. If you have high TA, then your pH is going to drift up pretty quickly. The sweet spot for TA is going to be between 70-90 parts per million.

Calcium Hardness (CH)
Next up we have calcium hardness. Just like it sounds, CH measures how much calcium is in your swimming pool. If you don’t have any calcium in your water (and you have a plaster or gunite pool), then the water is going to dissolve the calcium out of the walls of the pool. If your calcium level gets too high, you can get calcium scaling (which is a pain to deal with). The ideal level, assuming you have a plaster or gunite pool, is 250-350 ppm. If you have a vinyl pool, you don't need any calcium at all, but it won’t hurt anything as long as it’s below the 350 level.

Cyanuric Acid (CYA)
Last but definitely not least is Cyanuric Acid (CYA). Basically, CYA acts like sunscreen for the free chlorine in your pool. We talked about how FC can be consumed by breaking down organic matter, or by burning off from the sun. Well the CYA helps reduce that burn-off from the sun, but it also lowers the effectiveness of the free chlorine less to fight algae.

Theres a sweet spot. You definitely want some in your pool, otherwise your chlorine will evaporate from your pool quickly. But if you have too much, then the free chlorine isn’t going to be able to do it’s job and keep your pool sanitized.

If you have a saltwater generator, the recommended level is between 60-80ppm.

If you don’t have a saltwater generator, then you want to be between 30-50ppm.

Something to keep in mind about CYA, unlike any of the other chemicals we talked about, is that the ONLY way to lower CYA is by replacing some of the water. There is no chemical you can use to bring your level down. Now you can put CYA in your pool (sometimes called stabilizer). But there is no way to lower your CYA besides draining some water and diluting it with fill water which has no CYA.

That’s pretty much it. There are other chemicals and components in your swimming pool, but these are the most important five that you should be familiar with.

If you have a brand new pool, you should test your water as often as possible to get familiar with the pool. Once you are familiar with you levels and understand how they shift, you can switch to testing these levels weekly.

If you have any questions about these chemical levels, or any other chemicals in your pool, feel free to comment below.

Happy swimming!

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how to get an A in general chemistry I & II | chem 101 & 102
WHEW, these classes were hard but with my tips you can be sure to pass general chemistry 101 and 102.
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DID WE LIKE CHEMISTRY 101 FOR HOMESCHOOL HIGH SCHOOL SCIENCE??? CURRICULUM REVIEW

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This is a basic introduction to balancing chemical equations. I go over the Law of Conservation of Mass, and why we balance equations. I show you two step-by-step examples of how to balance basic chemical equations.


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In the Intersession course Cosmetology 101: The Chemistry of Beauty Products, Johns Hopkins University students spent three weeks exploring the principles of chemistry that underlie the cosmetics industry.

Read more on the Hub: https://hub.jhu.edu/2019/01/29..../chemistry-cosmetics

--
Video by Patrick Ridgely and Dave Schmelick
Johns Hopkins University Office of Communications
video@jhu.edu