What exactly is Abstract Art?
What exactly is Abstract Art? Abstract art is painting or sculpture which does not represent things in the way the eye sees them, but instead concentrates on...
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How Is Ink Made?
Ink is made from a pigment, or dye, and a liquid, called the vehicle, in which the dye is dissolved. There are two chief types of ink: Writing ink which can be washable...
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When Does Copper Turn Green?
When Does Copper Turn Green? Although copper is highly resistant to the chemical action of the atmosphere and of sea water, it turns green if exposed to them for a long...
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When Does Litmus Paper Turn Red?
When Does Litmus Paper Turn Red? Litmus paper turns red when placed in an acid solution, but blue if the solution is alkaline. This absorbent paper is the oldest and...
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Where Is Cobalt Used?
Where Is Cobalt Used? Can you think of any connection between a delicate Ming vase and a nuclear explosion? Difficult, isn’t it? And yet there is a connection in the...
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