The emotions that you feel are a result of chemical messengers, primarily neurotransmitters. Love, jealousy, envy, infatuation and infidelity all share a basis in chemistry. Why Onions Make You Cry
Marcelo Brito Filho
They sit there, so harmless-looking on the kitchen counter. Yet as soon as you cut an onion, the tears begin to fall. What is it in onions that makes them burn your eyes? Why Ice Floats
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Can you imagine how different the world around you would be if ice sank? For one thing, lakes would freeze from the bottom. Chemistry holds the explanation for why ice floats, while most substances sink when they freeze. How Soap Cleans
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Soap is a chemical that mankind has been making for a very long time. You can form a crude soap by mixing ashes and animal fat. How can something so nasty actually make you cleaner? The answer has to do with the way soap interacts with oil-based grease and grime. Does Bottled Water Go Bad?
saw2th, Creative Commons
Food goes bad because of chemical reactions that occur between food molecules. Fats can become rancid. Bacteria grow that can make you sick. What about products that don't contain fat? Can bottled water go bad? Fruits That Ruin Jell-O
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Jell-O is an example of a polymer that you can eat. Some natural chemicals inhibit the formation of this polymer. Simply put, they ruin Jell-O. Can you name them? Laundry Detergent in the Dishwasher?
William Roesly, morguefile.com
You can apply chemistry to decide when and where to use household chemicals. While you might think detergent is detergent, so it's interchangeable from one application to another, there are some good reasons why laundry detergent should stay in the washing machine. Ads
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