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Why are only some minerals found as native minerals? For example, iron and aluminum are almost never found as native elements in nature.
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Drug abuse will not lead to physical and psychological dependence. true or false ?
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Avariable that is not being directly tested during an experiment should be changed varied experimented controlled
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Chemistry, 22.06.2019 15:00
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
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Why are only some minerals found as native minerals? For example, iron and aluminum are almost never...
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