檢視两性物质的原始碼

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| style="background: #FF2400" align= center|  '''<big>两性物质 </big>'''
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在化学上，两性的物质是指既可跟酸反应，又能跟碱反应的[[物质]]。大部分类金属（metalloids）都可生成两性氧化物或氢氧化物。另外一类两性物质是指可接受和提供质子的两性分子，例如：胺基酸和蛋白质有胺基可接收质子，也有羧基可提供质子；而可自解离的水和氨分子，也是两性分子。弱酸的酸式盐（如NaHCO3）也是。