Remember "Mono?" Mono- means "one" in Greek. So how do you say "two" in Greek? Di = 2
Carbon dioxide is "better" than carbon monoxide, but they can both hurt you.
Read about carbon dioxide on Wikipedia in English or Chinese
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| CO2 (Carbon dioxide) |
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| CO (Carbon monoxide) |
Frozen carbon dioxide is called "dry ice."
Dry ice keeps ice cream cold.
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| Dry Ice (frozen CO2) |
A little carbon dioxide can make you feel bad, but it won't kill you. More than 5% carbon dioxide is toxic (= it can kill you).
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| Too much carbon dioxide can hurt you in these places (the colors show you how much: red is the worst) |
Carbon monoxide is different. Even a little carbon monoxide can kill you!
Click below to learn more about diploma and dilemma
A diploma was originally a piece of paper folded in two. That's why it's called a diploma (related word roots: diplo ~ duplo ~ double).
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| This is not a diploma, but it could become one! |
