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Showing posts from January, 2025

Why Gold is Expensive? Cool experiments

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 Gold is very stable. It doesn't rust even after a million of years.  Acids cannot dissolve it either, except for the famous mixture aqua regia. Let's see the experiments https://www.youtube.com/watch?v=Ri8heWPz5zY

Are You Getting All the Amino Acids?

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 Let's read this article, written by Muhammad Arif Malik 8.4: Amino acids - Chemistry LibreTexts What amino acids are missing in hummus?  What about chicken?

Is HF the Strongest Acid?

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 HF or hydrofluoric acid is not strong, but it can corrode glass. In water HF dissociates into H+ and F- ions. H+ is very small and sneaky, and can react very quickly. That's what makes acids so violent. Video 1 - Sulfuric acid vs a stainless steel spoon https://drive.google.com/file/d/1HoX0IHIP3HssHC_en9avXJLZn0bePv9R/view?usp=drive_link ___________________________________________________________________ Acid are quickly reacting chemicals, however they are not that quick as shown on some fake videos. The spoon here is made of gallium, which is a more reactive metal Video 2 - Strong acid vs highly reactive gallium spoon/ fake spoon https://drive.google.com/file/d/18vBR-auexfU5KyoMXQ7s7xlUKi2BS4lN/view?usp=drive_link ____________________________________________________________________________ HF has the pKa of approximately 3. It is not that strong. But it is very toxic, so do not touch it anyways! However, the other part, the F- , is very agressive, and it can destroy glass! On t...

Clam Anatomy - Do Shellfish Have Brain? 🐚🧠🔬

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 Shellfish includes clams, mussels, scallops, etc. They all have no brain, but their nervous system is decentralized and is located in many organs. These neurons in each organ are called ganglia. Even though shellfish has no brain, thy have other organs, like stomach heart intestine nephron/ kidneys Let's see a video of a dissection of a dead clam. Dissection is when someone opens a dead organism and cuts it into separate organs. Let's look what's inside a shell! It is not just a uniform mess. There are separate organs with their functions. https://drive.google.com/drive/folders/1UwvKPVV27Ta5-oU_MG-F6oZDognanOVt?usp=drive_link

Basalt and Obsidian

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 Learn about rocks Basalt | Not Boring At All

Phrasal Verbs Booklet - Improve Your English

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 Alphabetical list with pictures https://drive.google.com/file/d/1MOU8G9EkiRWQqLUKAETl7BjKTFcF-gFW/view?usp=drive_link A comprehensive dictionary of phrasal verbs online 239 Phrasal Verbs Starting with C: Definitions and Examples - UsingEnglish.com

RBG - Red, Blue, and Green - Color Mixing Game 🎨🖌️

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 There are 3 levels. Can you pass all of them? RBGnRGB

Pi, Area of a Circle, and Circumference Estimation - Math Simulations 🛞💫⏺️📏➕✖️🟰

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 Circumference  C = 2πR π in Other Universes | Azeem Bande-Ali | azeemba.com Area of a Circle A = πR^2 Approximation of the circle area - JSXGraph Wiki

Technology - A Mechanical Calculator

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He uses plywood gears to add and subtract numbers  How I built a Mechanical Calculator - YouTube

Types of Clouds

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 There are just 3 different cloud types that you have to know: cumulus, stratus, and cirrus https://drive.google.com/drive/folders/13J3XVc7-AnmMKRhh83L6eS9Dqf7bHIuK?usp=drive_link Clouds Archive - Cloud Appreciation Society

Learn About the Weather! ☁️ Audiobook Website 🔉📖

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 Here is a nice website with clear explanations The Earth Moves Two Ways - Tree House Weather Kids - University of Illinois Extension

Abu Abyad - The Biggest of the ~200 Islands of Abu Dhabi! - Birds, Geography, UAE, Archeology

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 Abu Abyad is sparsely inhabited. There are many birds nesting sites. On the island, there are some interesting archeological findings! 1. To read  Abu Al-Abyad - ADIAS Guide List of Birds Found in the United Arab Emirates with Pictures Abu Abyad.pdf - Google Drive

The Best Solar System Model I Could Find - Activity

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 1. Open this link  Solar System Scope - Online Model of Solar System and Night Sky 2. Zoom in and out - explore 3. Press play to see how planets move with time 4. Zoom out all the way to the Milky Way galaxy!

Stars and Planets - Activity

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 1. Go to this web site  Sky Tonight: Planets, Stars & Spacecraft Over Your Location 2. Choose any planet or star 3. Write down facts about it on a sheet of paper. Draw it, write the key facts 4. Sit with a partner, and tell each other about your planet or star

UAE Culture - a Good Overview for Foreigneers

 How to behave, and what to expect. uae: United Arab Emirates

Rocks

 There are 3 types of rocks: igneous, sedimentary, and metamorphic. Identifying Basalt Identifying Conglomerate Identifying Marble

The 5 Mechanical Stress Types

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 There are 5 different mechanical stress types. It is important to know them, so the buildings we make do not collapse, but also we use materials rationally, without unnecessary expenses. For example, in a pillar, it is important to reinforce the sides, not the centre.

History Map

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 Choose a year up to 3 000 BC, and see the borders of the past on a world map! How many countries where there in modern day Italy at 1700 AD? What about India at 1000 AD? How did Antient Egypt change over 1000-1500 BC? http://geacron.com/home-en/