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Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)
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Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?
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Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.
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What are the following VESPR names of the following: I2, Cl2O, BrCl, NF3, CCl4...
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