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These liquid alloys have the largest interfacial tension of any liquid at room temperature. The ability to modulate the tension offers the possibility to create forces that change the shape and position of small volumes of liquid metal. It has been known since the late 1800s that electrocapillarity\u2014the use of potential to modulate the electric double layer on the surface of metals in electrolyte\u2014lowers the interfacial tension of liquid metals. This phenomenon, however, can only achieve modest changes in interfacial tension since it is limited to potentials that avoid Faradaic reactions. A recent discovery suggests reactions driven by the electrochemical oxidation of gallium alloys cause the interfacial tension to decrease from \u2248500\u2009mN\u2009m<jats:sup>\u22121<\/jats:sup> at 0\u2009V to \u22480\u2009mN\u2009m<jats:sup>\u22121<\/jats:sup> at less than 1\u2009V. This change in interfacial tension is reversible, controllable, and goes well\u2010beyond what is possible via conventional electrocapillarity or surfactants. This report aims to introduce beginners to this field and address misconceptions. 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