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

Science of Ice and De-Icing – Steve Spangler

From sand and gravel to rock salt and magnesium chloride, the people who maintain our roads are constantly searching for the most most innovative ways to keep our road clear of snow and ice. Our science guy Steve Spangler looks at the science of de-icing with a cool experiment you can try at home. Continue reading

Dry Ice Recipes – Cool Halloween Science

Halloween is the perfect time for oozing, bubbling, eye-catching science! If you love to perform science demonstrations, Halloween is a wonderful excuse to fill the cooler with dry ice and get ready for a day filled with “ooze” and ahhhs! Great Halloween Science! Continue reading

Freezing by Boiling Demo – Flinn Scientific

The boiling point of a liquid depends on the external air pressure. When water is placed under vacuum, the boiling point decreases and the water boils. Boiling, however, is an endothermic process—as the water boils, the temperature decreases, and the water soon freezes!

In this demo, pressure changes cause a sample of acetone freezes while still boiling.

Click here for the complete instructions, courtesy of Flinn Scientific 

The Dripper

Hand print

Many children can identify that water exists in 3 states within our natural environment. Understanding that it is the very same water that undergoes changes of state presents far more of a challenge to children in grade 2. The following experiment is simple yet effective in helping children understand changes in state and a rudimentary understanding of the water cycle.

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