Select the correct answer. Which statement is true of a chemical change? A. It involves changes in the molecular structure. B. It involves changes in phase but not changes in the molecular structure. C. It involves dissolving one substance into another. D. It involves a change in the state, or phase, of a substance. E. It involves the process of separating two or more dissolved substances.
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Avariable that is not being directly tested during an experiment should be changed varied experimented controlled
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What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume
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Which statement accurately represents the arrangement of electrons in bohr’s atomic model?
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Select the correct answer. Which statement is true of a chemical change? A. It involves changes in t...
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