🔍 Experiment Of The Week – 9 Layer Density – by Steve Spangler

Density differences cause objects to “float” in liquids that are already stacked on top of each other.

With this science-magic trick, you’ll put a new spin on our famous Density Column demonstration. First, you’ll discover how to stack nine layers of liquids on top of each other. That alone looks really cool, but then you take it up a notch by making different solid objects “float” in the middle of all those cool looking stacked liquids. You’ll surprise yourself and your friends with what you can do with the 9-Layer Density Tower. Continue reading

Dry Ice Crystal Ball Bubble – SICK Science | Experiments | Steve Spangler Science

It’s the world’s coolest crystal ball.

Create a soap film on the rim of a bucket and, with one other simple ingredient, you will have made the world’s coolest crystal ball.

Source: Dry Ice Crystal Ball Bubble – SICK Science | Experiments | Steve Spangler Science

Making Liquid Nitrogen From Scratch! – Veritasium

Making liquid nitrogen is hard – in fact up until 150 years ago scientists doubted whether it was even possible to liquefy nitrogen. In 1823, At the royal institution in London, Michael Faraday first produced liquid chlorine, kind of accidentally by putting it under high pressure. He similarly liquefied ammonia. Continue reading

Is fire a solid, a liquid, or a gas? – TED Ed by Elizabeth Cox

Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could stare at the bright flames forever as they twist and flicker in endless incarnations… But what exactly are you looking at? Elizabeth Cox illuminates the science behind fire. Continue reading