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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

What Is pH?

Anyone who is the least bit familiar with vinegar, nausea, sodium bicarbonate, and ammonia-based cleaning solutions probably has a very good 'feel' for the different natures of acidic and basic ... Continue reading

Litmus paper is used to measure pH.

Was Popeye Wrong?

When you think of Popeye the Sailor what is the first thing that comes to your mind? It is probably spinach. Popeye used to get extraordinary strength as soon as he munched down a can of spinach. ... Continue reading

Spinach

Carbon Dating

As isotopes break down, or decay they give off radiation. Materials that decompose in this way are said to have a 'half-life'. As the quantity of material present decreases, so does the actual rate at ... Continue reading

Scientists date fossils by measuring carbon.