Throughout the year, some leaves change colour from green, to yellow, to red. Discover the role chlorophyll, carotene and anthocynanin pigments play in making this happen. Chemistry - Reactions - Learning Points. Leaf colour depends on...

What is electricity? How is it created, and what makes it useful? Physics - Electricity And Circuits - Learning Points. Electricity is a flow of charge. The flow of moving electrons is known as the electric current. Voltage is the amount...

Uses simple analogies to help understand the concept of chemical equilibrium

Nylon is one of the strongest polymers created by man. What makes it so durable? Chemistry - Chemical Industries - Learning Points. In the past, clothes were all made from natural sources, such as silk, wool and cotton. Then Wallace...

The lives of Asian and African elephants, from what they eat, to where they live, and what's threatening them. Biology - Animal Kingdom - Learning Points. There are two main species of elephant - African and Asian. African elephants are...

In this video Paul Andersen explains how equilibrium is achieved in a reversible reaction. When the rate of the forward reaction is equal to the rate of the reverse reaction the system is at equilibrium. Graphical analysis of...

In this episode of Crash Course Chemistry, Hank goes over the ideas of keeping your life balance... well, your chemical life. Equilibrium is all about balance and today Hank discusses Chemical Equilibrium, Concentration, Temperature, and...

Where and when an earthquake will strike remains one of geology's greatest mysteries. Could modern science ever predict them? Earth Science - Geology - Learning Points. Where and when an earthquake will strike remains a mystery. Most...

Welcome to the home of the Carbon family. Discover how much carbon they - and many average families - use every single year. Human Geography - A Changing World - Learning Points. 50% of CO₂ produced by humans comes from...

Discover how barrier methods of contraception can not only prevent pregnancy but stop the spread of sexually transmitted infections. Biology - Being Human - Learning Points. Barrier method contraceptives prevent the sperm from reaching...

In this video Paul Andersen defines the equilibrium constant (K) and explains how it can be calculated in various reversible reactions. The equilibrium constant is a ratio of the concentration of the products to the concentration of the...

In which Hank shows you that, while it may seem like the Universe is messing with us, equilibrium isn't a cosmic trick. Here, he shows you how to calculate equilibrium constant & conditions of reactions and use RICE tables all with...

In the heat of battle, knowledge is power. Messages must be sent and received quickly, accurately and if you plan on winning, they need to be encoded. October 1918 (World War I) France - Native American men from Oklahoma...

Learn about dynamic equilibrium, the conditions required for dynamic equilibrium to be reached and examples of systems at equilibrium.

Fugacity can be related to the equilibrium constant just like pressure. In this video, we derive an expression for the Kf (fugacity equilibrium constant) using Kp and the fugacity coefficients.

Everyday a student will ask me for the pronunciation of this word and to be honest many Natives get confused too. So let's learn how to pronounce this very tricky little word once and for all.

Water can either be a solid, a liquid or a gas. How does matter change state? Chemistry - Atoms And Bonding - Learning Points. Ice, liquid water and steam all consist of exactly the same molecules. Evaporation occurs when the temperature...

The Drake Equation tells us the likelihood that there are other advanced technological civilizations waiting for us among the stars. In this episode of Space Time we challenge you to use the Drake Equation to help us determine how near...

Learn the basics of chemical equilibrium using the dissociation of water as an example. Intro 0:14 Reversible vs irreversible 0:29 Dissociation of water 0:53 Definition of equilibrium 1:52

Is Sara Hooker concerned about the short term implications of ML models, AI in general or the risks of AGI (Artificial General Intelligence) and the skynet idea and it having drastic consequences for human survival?

Machine Learning...

Many chemical reactions don't just go one way, they go forwards and backwards. Once there is balance between the two, this is an equilibrium. And we need to be able to predict how much stuff there will be at equilibrium! Get ready to...

How do we grow crops quickly enough to feed the Earth's billions? It's called the Haber process, which turns the nitrogen in the air into ammonia, easily converted in soil to the nitrate plants need to survive. Though it has increased...

In this video Paul Andersen describes how reversible reactions achieve equilibrium as reactants are converted to products and products are converted to reactants. A model shows how forward reaction rates and reverse reactions rates...

Have you ever been to a Demolition Derby? Then you have an idea of how molecular collisions happen. In this episode, Hank talks about collisions between molecules and atoms, activation energy, writing rate laws, equilibrium expressions,...