Chemistry
What is the name for naturally-occurring alloy of gold and silver with a small amount of other metals?
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What is the most commonly used material in the manufacturing of semiconductors?
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What is a chemical process by which the hair is permanently straightened?
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What alloy is made of copper and zinc and used for decoration for its bright gold-like appearance?
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What is a mixture of gases that can be stored and transported like natural gas?
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Which element is commonly used in catalytic converters due to its properties as a reducing agent?
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What is the most abundant halogen found in the Earth's crust?
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