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How is the evidence from a fire scene collected? what should be avoided?
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In which situation can a mixture always be called a solution
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Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.
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Air can be considered a mixture. which statement does not explain why?
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How is the evidence from a fire scene collected? what should be avoided?...
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