What’s the loneliest of all physics...

Riddle: Shiny like a silver, denser than lead, pricier than gold, could stop a bullet, if I wanted to. What am I?

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Answer: Osmium

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Riddle: What four periodic elements, when combined, make up something that terrifies criminals?

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Answer: Carbon, Oxygen, Phosphorous, and Sulfur (C + O + P + S).

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Riddle: Adivina quién soy; Cuando voy, vengo, Y cuando vengo, voy.

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Answer: El cangrejo

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Riddle: A huge mythical animal said to resemble a whale.

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Answer: Leviathan.

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Riddle: It's black when you get it, red when you burn it, gray when you’re done with it. What is it?

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Answer: Charcoal

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Riddle: Kids really love me because I make things float. You can even use me to expand small things. What am I?

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Answer: Helium

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