No Chemistry- No world

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Isn't it pals ..?
Without chemistry can you imagine the world

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Why do onions make you cry?

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Why do onions make you cry? Who has never cried while cutting an onion? (well, apart from those who have never cut one hehehe). This is a little explanation in easy terms. Inside the onion cells there are some chemical compounds that contain sulfur. When you cut an onion its cells are broken and those chemical compounds then undergo a reaction that transforms them into a more volatile sulfured products, which are released into the air. These sulfured compounds react with the moisture in your eyes forming sulfuric acid, which produces a burning sensation. The nerve endings in your eyes are very sensitive and so they pick up on this irritation. The brain reacts by telling your tear ducts to produce more water, to dilute the irritating acid. So you cry to keep your eyes protected from the acid. There are some tricks to make onion-dicing less problematic: - Chop the onion under cold water . The volatile sulfured compounds will be released but then they react with the w...
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glowing flower in dark room - interesting experiment anyone can do at home..

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Use chemistry to make a real flower glow in the dark. Glowing Flower - Method #1 Test a highlighter pen to make sure it glows under black (fluorescent) light. Yellow is reliable, but some other colors glow brightly, too. Use a knife or saw to cut open the pen and expose the fibers which contain the ink. Remove the ink strip. Squeeze dye from the ink pad into a small amount of water. Trim the end of a flower so that it will be able to take up water. Place the flower in the water with the ink. Allow several hours for the flower to absorb the fluorescent ink. When the flower has taken in the ink its petals will glow under black light. Glowing Flower - Method #2 Would you be surprised to learn that many flowers naturally glow under black or fluorescent light? Some insects, which pollinate the flowers, can see in the ultraviolet. It's usually white flowers that are ultraviolet-colored. You can accentuate the glow of white flowers under a black light by feeding the...
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