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Chemistry Facts

How Sublime

Show of hands. How many of you can't resist playing with dry ice? Dry ice is carbon dioxide frozen to -109.3 degrees F (-78.5 C). Throw a piece in water and it bubbles and boils. Expose a piece to air ... Continue reading

Sublimation of Comet's Tail

Liquid Glass Is All Wet

As a liquid changes to a solid, its molecules go from a state of turmoil and chaos to a state of order. As these molecules slow down to form a solid, they arrange themselves into a crystalline ... Continue reading

Old Window Pane

What is Oxidation?

The term 'oxidation' derives from the ancient observation of rust (oxide) formation. Early chemists could determine an increase in the weight of a metal as it apparently captured something from the ... Continue reading

What Is Reduction?

Long ago, in a laboratory far, far away...before the development of the atomic theory we now use, scientists believed in a principle called animism, and that the chemistry of different materials was ... Continue reading