The video explains the concepts of mass numbers, atomic numbers, and isotopes in chemistry. It discusses the structure of an atom, the relationship between the number of protons and electrons in neutral atoms, and how elements are...

Learn the basics about the 'Atom Economy' in this video in our Chemical Calculations Series.

Learn to count the atoms in a chemical formula in this video!

Lewis symbols represent valence electrons around an atom's chemical symbol, helping visualize bonding and the formation of molecules

In 1967, researchers gathered to answer a long-running scientific question: just how long is a second? It might seem obvious at first. A second is the tick of a clock, the swing of a pendulum, the time it takes to count to one. But how...

Many of the inanimate objects around you probably seem perfectly still. But look deep into the atomic structure of any of them, and you'll see a world in constant flux - with stretching, contracting, springing, jittering, drifting atoms...

When a radioactive atom goes through alpha or beta decay, the atom itself changes into a different element. For example, carbon-14 decays to nitrogen-14 when it emits beta radiation. It’s impossible to predict when an individual atom...

A great magnetic bubble surrounds the solar system as it cruises through the galaxy. The sun pumps the inside of the bubble full of solar particles that stream out to the edge until they collide with the material that fills the...

Learn the basics about the law of the conservation of mass, when learning about properties of matter. The Law of Conservation of Mass says that in chemical reactions no matter is lost or gained. The law of conservation of mass means that...

Did you know that geometry was invented by molecules? It's true! Until the first stars went supernova and littered all the elements across the cosmos, everything was simply spheres, from protons to stars. But then, under cooler planetary...

VSEPR postulates state that the geometry of a molecule depends on the number and arrangement of bonding and lone electron pairs around the central atom

Understanding the mole and how to use it is essential to your success in chemistry. The mole just represents the amount of a substance. 1 mole of anything is equal to 6.02 x 10^23 which is known as Avogadro's number. This number tells us...

How would you find water on the Moon? NASA's Lunar Reconnaissance Orbiter has a unique idea: Count the neutrons coming from the Moon! <b<br/>r/>

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This video is about the international system of...

America's first great science battle wasn't the space race or the atom bomb, it was fought between Thomas Jefferson, a French nobleman, and in the middle a giant moose. Some people call Jefferson our only scientist-President, and T.J....

Sally Le Page joins us on Quiz Show this week, where we celebrate the submission of her doctoral thesis with the most peaceful, relaxing questions we could devise, assuming you don’t count the volcanoes or screamed-at caterpillars

Never draw a Lewis Structure wrong again! In this video, we’ll show you 4 simple steps to master the art of drawing Lewis Structures—an essential skill in chemistry that helps explain molecular behavior and the...

The word "mole" suggests a small, furry burrowing animal to many. But in this lesson, we look at the concept of the mole in chemistry. Learn the incredible magnitude of the mole--and how something so big can help us calculate the tiniest...

In this video Paul Andersen explains how systems are two or more objects that interact with one another. If a system has no relevant internal structure it can be treated as an object. The conservation laws apply to energy, charge and...

In this video, we will determine the Lewis structure for the compound, CHCl3 (chloroform).<br/>

Learn about the Periodic Table of elements and the group alkali metals with Alkali Metals Song Periodic Table by KLT

This video covers:

0:21 - What a molecu
le is
1:11 - What a c
ompound is
3:11 - How to use brackets in a c
hemical formula
4:48

- What a mixture is
r/>This vid
eo is suitable for
:
- All tiers
- All exam...

Protons and neutrons are made of three quarks, right? Wrong! Explore the particle they should have told you about when you were a kid!

Follow me!href='https://twitter.com/DoodleSci' target='_blank' rel='nofollow'>me! Doodle Science teaches you high school physics in a less boring way in almost no time! GCSE Science Script: When a radioactive atom goes through alpha...