Water is refreshing, hydrating, and invaluable to your survival. But clean water remains a precious and often scarce commodity - there are nearly 800 million people who still don't have regular access to it. Why is that? And how can you...

If our teeth are made mostly of calcium, why do we use fluoride to keep them healthy? Quick Questions explains why, and how we finally figured it out.

Humans have always peed and pooped, but where it goes after we’ve done our business has changed a lot. In fact: The water you just drank may well have been a part of someone’s urine just weeks ago! SciShow explains!

Paul Andersen begins with a brief description of NASA discoveries related to Mars, Mercury and water. He then explains why water is required for life. He finally uses a simulation to show you why water acts as a wonderful solvent and...

Mr. Andersen explains the basics of balancing chemical equations. A visual guide shows you how to change coefficients to balance the atoms in reactants and products.

Striking in areas where vaccines tend to be out of reach, the 2005 Indian Ocean tsunami produced fears of an immediate cholera epidemic. But one district in southern India showed the world how to defy the odds—clearing contaminated...

Howcast - Learn how to prevent pool chlorine from turning your hair green from Pierre Michel Salon colorist AJ Lordet in this Howcast hair tutorial.

Howcast - Learn how to make your water eco-friendly in this Howcast video featuring Alegre of Green and Greener.

Explores the units of equilibrium constants for reactions in different states

Transition metals are elements in the d orbital. The reason these are unique is that they do not have 1 set charge they become when they become an ion like elements in the s and p orbital. Elements in the d orbital, or our transition...

In this video we are going to look how to name binary ionic compounds. These compounds deal with the ionic bonding of 2 different elements. Remember that an ionic compound is formed between a metal and a nonmetal or a cation and an...

Percent composition is the percent of total mass of one element in a compound. We can find the percent composition by using this formula: mass of element/total mass of compound times 100. In this video, we will cover what percent...

This video is explaining how drinking water works for kids.

In this video, we're going to show you how to balance chemical equations – it's going to be easy! We'll start with the basics, and then move on to more complex problems. By the end of this video, you'll be able to balance chemical...

Writing formulas for ionic compounds is all about canceling out the charges! An ionic compound is formed between a cation and an anion, or a positive and negative charge so the goal is to always get the charges to add up to zero! In this...

I took a boat through 96 million black plastic balls on the Los Angeles reservoir to find out why they're there. The first time I heard about shade balls the claim was they reduce evaporation. But it turns out this isn't the reason they...

What is an atom? And what is it made of? In this video, I will be introducing you to the atom. We will also look at concepts like atomic mass, elements and isotopes.

Molecular Matters: Polar and Non-Polar Solids

Polar molecular solids are crystalline solids with a permanent dipole moment due to differences in electronegativity between atoms. These solids have strong dipole-dipole...

The Born-Haber cycle calculates lattice energy using steps like ionization, electron affinity, and sublimation, showing the energetics of ionic compound formation

Anions, formed by electron gain, contribute to ionic bond formation. Larger anions with higher charges enhance the bond's electrostatic attraction

NaCl forms when sodium transfers an electron to chlorine, creating Na⁺ and Cl⁻ ions that attract each other to form a stable ionic lattice.

The Kossel-Lewis approach introduced the concept of ionic and covalent bonds. It emphasizes the role of electron transfer or sharing between atoms to achieve noble gas configurations

Ammonia and bleach are very popular for cleaning surfaces. However, the fact that you should NEVER mix ammonia and bleach is so well-known because their combination may lead to the formation of dangerous, potentially hazardous byproducts...

Why does chemistry happen?? Why do ions form?? Why do elements bond together?? These are all important questions and the answer comes back to one very important principle in chemistry and that is element stability. Elements are stable...