We may have planet-shattering asteroids to thank for the origin of life on Earth.

When you think of newer ways to make electricity, solar cells and wind turbines may come to mind. But scientists can make the stuff from just about anything. And they're working on some truly bizarre ways to generate power.

We all want green energy to stop climate change, and one option is hydrogen. But achieving green hydrogen is tough, so some want to consider so-called blue hydrogen instead. Support for this video provided by Gates Ventures.<br/>

European researchers claim to have developed a composite material that is basically uncuttable, so with this material, your bike might never be stolen.

In this video Paul Andersen explains how Le Chatelier's Principle can be used to predict the effect of disturbances to equilibrium. When a reversible reaction is at equilibrium disturbances (in concentration, temperature, pressure,...

In the first physical science video for the Next Generation Science Standards Paul Andersen explains the structure and properties of matter. He starts by explaining how all matter is made of about 100 smaller particles called matter. ...

All the complexity in the universe ultimately owes its existence to one of the simplest materials possible: molecular hydrogen. And not only did this molecule play a huge role in building the universe as we know it, today, it also helps...

TED Fellow and astronomer Erika Hamden leads the team building FIREBall, a telescope that hangs from a giant balloon at the very edge of space and looks for clues about how stars are created. She takes us inside the roller-coaster,...

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...

In this video Paul Andersen explains how redox reactions are driven by the movement of electrons from the substance that is oxidized to the substance that is reduced. Oxidation is the loss of electrons and reduction is the gaining of...

We don't live in a perfect world, and neither do gases - it would be great if their particles always fulfilled the assumptions of the ideal gas law, and we could use PV=nRT to get the right answer every time. Unfortunately, the ideal gas...

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...

Mr. Andersen explains the concept of a limiting reactant (or a limiting reagent) in a chemical reaction. He also shows you how to calculate the limiting reactant and the percent yield in a chemical reaction.

Chemistry raised to the power of AWESOME! That's what Hank is talking about today with Electrochemistry. Contained within, Hank discusses electrochemical reactions, half reactions, how batteries work, galvanic cells,...

Mr. Andersen explains the difference between physical and chemical changes. A brief discussion of chemical reactions and equations is also included.

Mr. Andersen shows you how to draw Lewis Dot Diagrams for atoms and simple molecules.

Science is about more than just finding immutable laws of nature. It’s about having the imagination to try things and ask questions that might not necessarily lead anywhere, but that just… feel right.

James Webb captures infrared light, which allows us to see billions of light years away. Some galaxies would not be visible otherwise, because their light has redshifted beyond visible light spectrum due to the...

DIY SCI host Steve Spangler demonstrates how gas can be used to make exploding eggs! WARNING: DO NOT TRY THIS AT HOME! PLEASE LEAVE EXPERIMENTS LIKE THIS TO THE DIY SCI PROFESSIONALS!

When we discussed basic information regarding homogeneous and heterogeneous catalysis, we mentioned hydrogenation of alkenes in both of these contexts. Now let's get more specific and describe the mechanism of this precise catalysis in...

We just finished looking at some catalytic hydrogenation reactions, so let's look at another extremely important application of hydrogen gas. Ammonia is a critically important compound for many reasons, particularly fertilizer production...

Analyzes how Le Chatelier’s Principle applies to concentration changes

Discusses the impact of altering reactant or product concentrations on the equilibrium state

Group IV elements, including carbon, silicon, germanium, tin, and lead, have varying reactivity with water, acids, and bases due to their varying electronegativities and bond strengths. Carbon is generally unreactive, while silicon...