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The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
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Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.
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In which phase of mitosis do the spindle fibers pull the chromosomes apart to opposite sides of the cell ?
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Explain, in terms of electrons, what a positive ion indicates (gaining or losing electrons)...
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