Round 10: Tossup 15

On a Walden plot, higher ionicity is seen in substances named for this property when they are hydrate-based and contain metal chlorides. Adhesion layers remove oxides before a type of wafer bonding named for this property, which is commonly used to combine gold and silicon. This property’s “halt” occurs between two points where the slope is zero on a cooling curve. During steel metallurgy, austenite begins cooling after separating from a mixture with this property (15[1])called (*) ledeburite. Carbon content greater or less than 0.8 percent determines whether steel is “hypo-” or “hyper-[this property].” Biodegradable alternatives to ionic liquids are called “deep solvents” with this property. For 10 points, give this term for a binary mixture that has a lower melting point than its constituents. ■END■

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