Electronegativity is the tendency of an atom to gain an electron. The way I think about it is like tug of war. The stronger an atom can pull in an electron, the higher it’s electronegativity will be. The trend for electronegativity is...

Ionization energy is the amount of energy it takes to remove an electron. The stronger the nucleus can hold on to the electron, the more energy that will be needed to remove the electron. The trend for ionization energy is that it...

Writing electron configurations can be a long and daunting task, until you learn the shortcut! Often times called the noble gas configuration, the shorthand notation will have you writing electron configurations very quickly! In this...

Celebrated physicists Nobel Laureate Tony Leggett (University of Illinois), Freeman Dyson (Institute for Advanced Study), Paul Steinhardt (Princeton University), Michael Gordin (Princeton University) share their intriguing perspectives...

Valence electrons are the electrons that are located in the outermost shell of an atom. In other words, these are the electrons that can be gained or lost during a chemical reaction. In order to determine the number of valence electrons...

This video covers:

0:43 - The number of electrons per energy
level
4:24 - why atoms react / why they lose or gain

electrons

This vi
deo is suit
able for:
- Al
l tiers
- All exam boards
- Triple and...

In this video, we explore the diamond and graphite which are two allotropes of solid carbon and we compare their structure and properties. Allotropes are different structural forms of the same element in the same physical state.

This video covers:

- The structure of the
atom
- The difference between protons, neutrons and
electrons
- Wha
t isotopes are <
br/>- Energy

levels
-
Ionisation

General info:
-
Suitable for...

Everything you need to know about ionic bonding!



Ionic bonds form when one atom transfers electron/s to another atom, so that both atoms forms oppositely charged ions. These ions are then attracted to each other by...

Learn all about the properties and trends of the group 7 (halogens) and group 0 (noble gases) elements. Including why halogens become less reactive as you go down the group, and why noble gases are so unreactive. Suitable for: Combined...

What are alkali metals? Why are they so reactive? What are the trends as you go down the group? How do they react with water, oxygen and chlorine? Learn all this and more!

This video covers how atoms gain or lose electrons to form ions, why they bother, and how to tell which ion they'll become. <b<br/>r/>

Based on AQA course, but suitable for all exam boards.

This video explores five fun facts about chemical bonds.

This video is answering the question of what is a chemical bond.

Temperature sensors explained. How do temperature sensors work? In this video we learn the basics of how different temperature sensors work. We look at thermometers, thermocouples, thermistors and resistance temperature detectors RTD.<br/>

How does a battery work, learn from the basics where we use and battery and how batteries work. With thanks to Squarespace for sponsoring this video.

Thermistors. Learn the basics of how thermistors work in this video on thermistor basics temperature sensor.

Conventional current and electron flow. In this video we briefly learn the difference between conventional current and electron flow. We learn how the electron was discovered and why battery terminals are positive and negative. What is...

How long will a battery power a circuit? Learn how to estimate battery life in this video.

The physics of a laser - how it works. How the atom interacts with light. I’ll use this knowledge to simulate a working laser. We will learn how LASERs relies on Stimulated absorption, Spontaneous emission, and most importantly:...

Electrons and Ions describes what occurs in an atom when electrons are added or removed from the outer shell using the terms ion, bonding, gain, lose, and charge.

Explains how particles collide for a reaction to occur and how this process affects the rate of a reaction.

The Periodic Table: Atomic Number examines the Periodic Table of Elements and uses the atomic number to identify the number of protons, neutrons, and electrons in a given element.

Princeton historian of science Michael Gordin describes how being receptive to wacky, unorthodox ideas - up to a point - brings various benefits to our understanding of the world.