CHEMISTRY INFORMATION AND VIDEOS

By Garry Mason | Chemistry related articles and tutoring and video information.

The chemistry behind a firework explosion

There's a lot more science involved than you might think<p>It’s Independence Day, and that means it’s time for controlled explosions in the sky. No, not Texas post-rock — the great scientific display that is a fireworks show.<p>"Fireworks are an application of chemistry and engineering: you need good …

Fireworks

Lose Yourself in These Videos of Chemistry Up Close

Scientists in China use 4K imaging to make the most gorgeous chemistry videos we've ever seen.<p>Scientists at the University of Science and Technology of China created these up-close movies of chemical reactions, featuring chemical formulas overlaid on the video to tell you what you're looking at. …

Chemistry

New interactive periodic table shows how each element influences daily life

How do gallium and tantalum influence your daily life? Quite a bit, it turns out. Gallium is a component of light-emitting diodes, or LEDs, while …

What is the Difference Between Molarity and Molality?

Molarity vs Molality<p>Molarity and molality are both measures of the concentration of a chemical solution. Molarity is the ratio of moles to volume of …

Chemistry

Molarity Example Problem

Calculate Molarity of a Sugar Solution<p>Molarity is a unit of concentration in chemistry that describes the number of moles of a solute per liter of …

Chemistry

So Long TNT, There's a New Explosive in Town

Bis-oxadiazole could replace TNT and other explosives in military ordnance.<p>The chemistry of explosives is a delicate matter. A little less carbon, a little more nitrogen, and the right amount of oxygen can transform a relatively inert substance into quite the showstopper.<p>For more than 100 years, …

U.S. Dept. of Defense

A Forgotten Element Could Help Us Redefine The Way We Measure Time

The most precise ever.<p>A rare earth element that doesn't get much mention could become the key to upgrading atomic clocks to become even more …

NASA is about to create the coldest spot in the known universe

The Cold Atom Laboratory launched this morning<p>Beyond the bounds of our planet, the record for the coldest temperature is currently held by the Boomerang Nebula, a swiftly moving chill cloud of dust and gas that stays at a cool one degree Kelvin, or –458°F. Down here on the ground, physicists manage …

A massive, 'semi-infinite' trove of rare-earth metals has been found in Japan

Researchers have found hundreds of years' worth of critical rare-earth metals beneath Japanese waters — enough to supply to the world on a …

Rare Earth

First images of molecules in reaction | Cosmos

<b>What does a molecule look like?</b> It turns out, exactly like the drawings we made in high school chemistry class. A striking new set of images confirms …

Chemistry

This Awesome Periodic Table Tells You How to Actually Use All Those Elements

Americium could save your life.<p>Thanks to high school, we've all got a pretty good idea about what's on the periodic table.<p>But whether you're looking …

Chemistry

Stanford’s ‘diamond anvil’ technology could be a game-changer for chemistry

Diamonds are pretty darn tough. How tough? Tough enough that squeezing a couple of them together in a molecular diamond anvil — a technique that’s capable of achieving 100 times the pressure experienced at the bottom of the Mariana Trench — can be used to create custom molecules through the …

These Stunning Microscopic Visuals Make It Easy to Envision Chemistry

Envisioning Chemistry is a series of visually striking imagery that brings the fascinating world of microscopic chemical reactions to life.<p>Thanks to …

Heaviest Element Should Completely Subvert the Rules of High School Chemistry

At the bottom right-hand corner of the periodic table sits a fantasy world. Until recently, these elusive elements’ names were just fancy …

Physics

Understanding the Mole Unit of Measurement

A mole is simply a unit of measurement. Units are invented when existing units are inadequate. Chemical reactions often take place at levels where …

Chemistry

Why Is a Mole in Chemistry Called a Mole?

A mole is an important unit in chemistry. Do you know the mole got its name? Here is the answer to why a mole is called a mole.<p>Ostwald is responsible …

Is Fire a Gas, Liquid, or Solid?

The ancient Greeks and alchemists thought that fire was itself an element, along with earth, air, and water. However, the modern definition of an …

Light Rare Earth Elements (LREE)

The light rare earth elements, light-group rare earths, or LREE are a subset of the lanthanide series of the rare earth elements, which are …

Why Is Chemistry So Hard?

What Makes Chemistry a Challenging Science<p>Chemistry has a reputation as a hard class and difficult science to master. Here's a look at what makes …

There's a metal that conducts electricity but not heat

Vanadium Dioxide<p>In science, there exists a law known as the Wiedemann-Franz Law that states, simply, that most metals that are good conductors of …

University of California

Chemistry Glossary Definition of Ion

An ion is defined as an atom or molecule which has gained or lost one or more of its valence electrons, giving it a net positive or negative …

Protons

An Illustrated Periodic Table Showing How Chemical Elements Interact With Our Everyday Lives

Retired Boeing software engineer Keith Enevoldsen created the color-coded “Periodic Tables of Elements, in Pictures and Words” for both kids and …

What Are Element Blocks?

These Are Different from Periods or Groups<p>One way to group elements is by element blocks, sometimes known as element families. Element blocks are …

Interactive periodic table finally clues us in to what elements are used for

Looking at the periodic table, most of us have no issues identifying the use of certain elements. Sodium, carbon, nitrogen, oxygen and others are no-brainers but what about the less talked about elements.<p>Seriously, do you know what Vanadium is used for? How about Polonium? Of course you don’t. …

Chemistry

A Periodic Table Surprise: The One Element In Stars That Isn't On Earth

When it comes to the elements in the periodic table found throughout the Universe, it’s only the first two that originated from the Big Bang: hydrogen and helium. Everything else was formed from stars, whether:<p>fused in their cores, from lighter elements into heavier ones,<br>• built in supernovae, where …

The Kilogram's Makeover Is Almost Complete

The kilogram is a 127-year-old relic. It is the last remaining standard of measurement in the International System of Units that is still based on a …

Physics

10 Quantum Truths About Our Universe

From the moment that it was discovered that the macroscopic, classical rules that governed electricity, magnetism and light didn’t necessarily apply to the smallest, subatomic scales, a whole new view of the Universe became accessible to humanity. This quantum picture is much larger and …

Quantum Physics

Wiki page not found - Learn Chemistry

The Learn Chemistry Wiki has been shut down<p>Thanks for visiting. In order to consolidate and improve our education resources, we've shut down the …

Chemistry

Diffusion of gases - ammonia and hydrogen chloride- Learn Chemistry

Diffusion of gases – ammonia and hydrogen chloride<p>Demonstration<p>Concentrated ammonia solution is placed on a pad in one end of a tube and concentrated …