Electrolysis is fundamental to industrial processes. How was it discovered, how does it work and what are its uses? Chemistry - Reactions - Learning Points. The Chemist Humphry Davy developed the reaction we now call electrolysis....

We compare the reactivity of Group 1 and Group 2 metals. We add sodium and then potassium to water. We observe the reactions. Next we add magnesium and then calcium to hydrochloric acid and observe the reactions. The results let us put...

We use mercury(II) chloride solution and potassium iodide to demonstrate a precipitation reaction. Saturated potassium iodide solution is placed on a magnetic stirrer and the speed is set so that a vortex is created. Mercury(II) chloride...

Refers to the hydroxide ion, which is a negative ion consisting of an oxygen atom covalently bonded to a hydrogen atom. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...

Paper upcycling: its importance, process, and environmental impact. Learn how to reduce waste and reuse materials while testing eco-friendly fertilizers.

The periodic trend for atomic size is that the size of the atom gets bigger as you go down the periodic table and from right to left across the periodic table. This trend is sometimes referred to as atomic radius as there is a direct...

Potassium

As the world’s population grows so will our use of synthetic fertilisers. Innovations mean more sustainable options exist, but they still must be viable

When metals react they lose their outermost electrons. This video covers which metals are the most and least reactive & also how we can determine reactivity by reacting them with acids and water. Then at the end we cover displacement...

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!

We just learned about relative dating, but if you really want to calculate the age of a rock, absolute dating is what you need. This takes advantage of the presence of radioactive nuclides that decay at a reliable rate, so it is also...

Once again the grater will be used in the preparation of Coach Socrates’ recipe. Today’s treat – Coach Socrates’ famous Coleslaw.

Dr. Algae talks about the importance of choosing a healthy beverage to drink, especially after a workout. He gives examples and discusses the pros and cons of each beverage.

Food Detective Berry Blue talks about why vegetables are such an important part of the Fabulous Five Food Groups. She explains the way vegetables grow and how they can be purchased fresh, canned, or frozen. She raves about the...

This video will explain the concept of a mole and how to convert between moles, grams, and atoms.

This brief video tutorial briefly discusses resting membrane potential: 0:00​​. Introduction 0:53. What is a resting membrane potential? 1:33. How is a RMP measured? 4:12. How do we get a RMP at cell membranes? 9:04. How is the RMP...

I got a lot of feedback from my last video. Now the table saw is back with FULL AUTO more explosions, and i shoot randy. Table saw vs christmas ornaments, oobleck, fish tank, balloons, and soda.

Thanks to my friend Travis for being awesome and letting me use his property to film. Honestly this dude is awesome, ever time I go over there the lawn just gets destroyed, things catch fire that aren't supposed to, and hes just a...

This brief video tutorial briefly discusses voltage-gated sodium channels: 0:00​​. Introduction 0:14. Structure (activation gate and inactivation gate) 1:09. Three conformational states: - 1:24. 1. Closed - 2:30. 2. Open - 3:54. 3....

In this video, I talk about the pacemaker potential of the heart. We're going to dig into the SA and AV Nodes, how they work, and what happens when things go wrong.<br/>

Classification of metals according to their chemical activity

Main groups in the modern periodic table | Summary

This video explains the different types of tears and their composition, including the reason why tears are salty. It also delves into the science behind tear production and how it is controlled by the brain.