Answers to Questions Kids Ask! - Where "Why?" Turns to "Wow!"
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August 25, 20101918 - Leonard Bernstein
1917 - Mel Ferrer
1930 - Sir Sean Connery
1938 - Frederick Forsyth
1942 - Howard Jacobson
1947 - Ann Archer
1949 - Martin Amis
1954 - Elvis Costello
1956 - Matt Aitken
1961 - Billy Ray Cyrus
1970 - Claudia Schiffer
Cut apples turn brown because of a reaction called oxidation. Oxygen in the air reacts with a natural substance in apples called phenolase and turns the cut surface brown. Mild acids like lemon juice can stop this reaction; tossing cut apple chunks with a little lemon juice will keep the apples from turning brown. Vinegar which literally means “sour wine” goes through a fermentation process, which makes it stronger than lemon juice. The key here seems to be the mildness of lemon juice.
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Why does the skin of a banana turn brown when I leave it outside?
Bananas turn brown when left outside after a while because certain chemicals in the fruit react with the oxygen in the air by destroying cells, creating that icky brown color….
How come when you mix vinger with baking soda it explodes?
Nothing really explodes. Together, baking soda and vinegar just produce a lot of gas. The two things together give off carbon dioxide, the gas. This makes the bubbles. The stuff…
Why when I drink orange juice after brushing my teeth, does it tastes yucky?
I’m told that one of the secret ingredients in toothpaste is a small amount of one particular chemical that helps clean your teeth. Know what it does? For a short…
Can two brown-eyed parents can have a blue-eyed child?
Yes, they can, and this actually follows the most simple rules of genetics. Blue eyes are, generally speaking, recessive to brown eyes. Say “B” is a gene for brown pigment…
Why does an egg soften in vinegar?
The eggshell is made of calcium carbonate. Vinegar contains 5% acetic acid, and that is what dissolves the eggshell. All that is left is the membrane that runs between the…