Learning Objective: Relate the wavelength of light emitted or absorbed to transitions in the hydrogen atom.

Topics: emission spectrum, hydrogen

Alicia Vikander and Kit Harington say they were already friendly before getting cast in their new wartime drama, 'Testament of Youth.' They say familiarity helps when doing chemistry reads. The film opens in limited release June 5. (June 4)

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Trick to Calculate Atomic Mass of first 20 Elements

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How to apply wastewater chemistry and technology to save time, reduce headaches and maintain compliance.

This is chemistry & atoms 101 tutorial video on chemical symbols, elements, substances, and properties.

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Our work has been verified by science education researchers at the University of Southern Queensland, Dr Jenny Donovan and Dr Carole Haeusler, who confirm that primary students are capable of learning much more complex scientific concepts than previously thought, and crucially, that they love it. Students run to class!

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Video transcript:

Atoms are a lot like us - we call their relationships "bonds," and there are many different types. Each kind of atomic relationship requires a different type of energy, but they all do best when they settle into the lowest stress situation possible. The nature of the bond between atoms is related to the distance between them and, like people, it also depends on how positive or negative they are. Unlike human relationships, we can analyze exactly what makes chemical relationships work, and that's what this episode is all about.

If you are paying attention, you will learn that chemical bonds form in order to minimize the energy difference between two atoms or ions; that those chemical bonds may be covalent if atoms share electrons, and that covalent bonds can share those electrons evenly or unevenly; that bonds can also be ionic if the electrons are transferred instead of shared: and how to calculate the energy transferred in an ionic bond using Coulomb's Law.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

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--
Table of Contents
Bonds Minimize Energy 01:38
Covalent Bonds 03:18
Ionic Bonds 05:37
Coulomb's Law 05:51

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Here is a quick explanation of the basics of atoms, elements, compounds, and mixtures explained with legos!

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

Topics: electron configuration, cation, anion

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02:14 - Chlorine Levels
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02:52 - Chlorine Levels in Salt Water Pools
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04:06 - Bromine Levels
04:32 - Biguanide Pros and Cons
05:58 - Mineral System
07:01 - Salt Water Levels

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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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💁‍♀️ 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!

DISCLAIMER: Some links in the description are affiliate links, which means that if you buy from those links, I’ll receive a small commission. This helps support the channel and allows me to continue making videos like this. Thanks for the support!

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

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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