How Are Chalk Crayons Made?
How Are Chalk Crayons Made? When you write with chalkboard chalk, you are writing with soft white limestone rock. But the limestone rock is first crushed to powder...
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What Is Paint?
Paint is a mixture of a liquid vehicle, such as oil or a resin, and one or more colored powders. The colored powders, called “pigments,” give the paint its...
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Is Black a Color?
No, black is not a color. It is actually the absence of light, which our brain visualizes to us in some way. White light is a mixture of all the colors in the rainbow....
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How Does a Car Engine Work?
How Does a Car Engine Work? A car engine works by burning a mixture of gasoline and air inside a cylinder. When the engine is turned on, gasoline first goes into a...
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What Is Margarine Made From?
Margarine is a manufactured mixture of vegetable fats and oils. Margarine was created in the early 1800’s as an inexpensive substitute for butter. Most people...
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