| 11. | :: Water can act as an acid or a base, as it is amphoteric.
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| 12. | Aluminum hydroxide is amphoteric in character:
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| 13. | Most alkaloids are weak bases, but some, such as theobromine and theophylline, are amphoteric.
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| 14. | Some ions are classed as amphoteric, being able to react with either an acid or a base.
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| 15. | Germanium forms an amphoteric oxide, GeO 2 and anionic germanates, such as Mg 2 GeO 4.
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| 16. | The oxide in its preferred oxidation state ( Sb 2 O 3, + 3 ) is amphoteric.
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| 17. | There are also special columns that have resins with amphoteric functional groups that can exchange both cations and anions.
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| 18. | It bonds covalently in most of its compounds; has an amphoteric oxide; and can form anionic aluminates.
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| 19. | Its crystalline structure shows some evidence of Al 2 O 3 is amphoteric, and a conditional glass-former.
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| 20. | Water is amphoteric, meaning it is both an acid and a base it produces and ions by self ionization.
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