Topic: elements

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Explore the Science Behind Fireworks—and the Galaxy

When you watch fireworks burst with color, you're seeing examples of how stars and galaxies work: Blues from copper, yellows from sodium, bright whites from aluminum, barium greens, and reds made from strontium... The...

How Small Is An Atom?

Using a strand of hair, your fist, rice and sand grains, as well as the room you're sitting in right now (assuming it's not a huge gymnasium), let's try to visualize the basic building block of everything around us: A...

The Ring of Truth: Two Hydrogen Atoms & One Oxygen Atom

Possibly the most well-known scientific formula on the planet, H2O is one of those terms that we see around all the time. We know that H2O means water, and that a water molecule is composed of two hydrogen (H) atoms &...

How do we study the stars & measure extreme distances in space?

How can we know so much about other galaxies? What are they made of? How big are they? How far away are they from Earth? "Want to know the secrets of the universe? Just follow the light." These two TED Eds fro...

To the Scientists of the Future: Materials science with EUPHRATES

Created by EUPHRATES and Masahiko Sato for Japan's National Institute for Material Science (NIMS), these three "To the Scientists of the Future" short films are a mesmerizing combination of materials research innovati...

Beautiful Chemical Reactions

Metal displacement, precipitation, crystallization, and more: This is Beautiful Chemistry, a 4K UltraHD short film project that aims to share how beautiful chemical reactions can be. From Tsinghua University Press and...

Everything You Need to Know About Planet Earth

When we wake up, eat breakfast, get ready for school or work, and head out the door, we may not be thinking about how unique our small, wet rock of a planet is. But the Earth is unique, and we're always happy to happe...

Spectroscopy of Stars – Wonders of the Universe

Understand what the universe is made of by looking at the light of its stars. In this clip from Wonders of the Universe – Stardust, Professor Brian Cox demonstrates how chemical elements emit a unique set of colors wh...

Why do ice cubes crack in drinks?

Here's an easy experiment: Take ice straight from the freezer and drop it in a glass of water. Listen and watch for the crack. Why does it do that? Professor Martyn Poliakoff of the Periodic Table of Videos team e...

Testing Fireworks

How do you know that the fireworks you've made are going to burst in the sky as expected? Test them! In this episode of I Didn't Know That, visit one of the UK's leading fireworks manufacturers as they test the compon...

Dr. Michelle Thaller: We Are Dead Stars

We are dead stars. Everything we are – the iron in our blood, every element we've ever heard of – is made from a star, a dust cloud collapsing under the force of gravity. Astronomer Dr. Michelle Thaller si...

Mercury Hz: Sound waves passing around & through mercury

From “science on a budget” YouTuber Nick Moore, watch this drop of mercury being vibrated from ~120Hz down to ~10hz. We've seen resonance demonstrated before in Chladni Pattern v...

It’s Okay to Be Smart: How The Elements Got Their Names

This information-packed video from It’s Okay to Be Smart explains How The Elements Got Their Names in rhyme! It’s a great introduction for looking further into the periodic table&#...

Dropping a neodymium magnet through a thick copper pipe

There are quite a few neodymium magnets falling through copper pipes on the internet, but we can still understand why this demonstration video is making the rounds: it’s just so cool lo...

Match burning in slow motion

What’s happening when a match is lit? From Answers.com:  Matches contain sulfur, glass powder, and an oxidizing agent as the components in the match head. When you strike a match, the ...

The Ring of Truth: Molten gold transforms into gold leaf

Above, watch molten gold transform into gold leaf as it is beaten into thinner and thinner pieces while cold. This clip is from PBS’ six-part miniseries The Ring of Truth: An Inquiry I...

Periodic Table of Videos: Liquid Oxygen (slow motion)

From the Periodic Table of Videos team, hot charcoal meets Liquid Oxygen (slow motion). via Doobybrain.

AsapScience: The NEW Periodic Table Song

How fun is this AsapScience video written, directed and performed by Mitchell Moffit? Based on the famous can can piece from Orphée aux enfers by Jacques Offenbach, The NEW Periodic Table Son...

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