| 21. | A picture emerged of metals as positive ions held together by an ocean of negative electrons.
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| 22. | Sodium is the primary cation ( positive ion ) in extracellular fluids in animals and humans.
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| 23. | The positive ions created in the avalanche induce a positive current signal on the pad plane.
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| 24. | They are composed of positive ions whose identity depends on the residual gas inside the tube.
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| 25. | Acid is a substance that produces hydrogen ions, the only positive ions when dissolved in water.
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| 26. | These ions react with a sample surface to make positive ions that are used in mass spectroscopy.
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| 27. | There is some belief the winds also create positive ions, which are believed to affect mood negatively.
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| 28. | These struck further gas atoms, knocking electrons off them, creating more positive ions in a chain reaction.
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| 29. | These collide with atoms of the gas, knocking electrons off of them and creating more positive ions.
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| 30. | In a metal, atoms readily lose their outermost ( " valence " ) electrons, forming positive ions.
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