Why Does Bread Have Holes in It?
Why Does Bread Have Holes in It? The holes in a piece of bread are made by bubbles of gas. In bread making, flour and water are mixed to form dough. Then a small amount...
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What Is a Vacuum?
What Is a Vacuum? A vacuum, in theory, is a space entirely devoid of matter. But no method has been devised for producing one. In practice, therefore, a vacuum is an...
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What Is an Aerosol?
What Is an Aerosol? An aerosol consists of fine particles of liquid or solid substances suspended in the air, or in any other gas. It is not, as many people think,...
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Where Does the Wax Go When Candles Burn?
Where Does the Wax Go When Candles Burn? Nowhere-it simply changes into other substances. That is what burning does to everything. The moment you put a match to the...
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Why Do We Burp?
A burp (sometimes called a belch or by its medical term, eructation) is the release of gas from the digestive tract (in this case, the esophagus and stomach) through...
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