Question

How is copper oxide reduced? And what is a LIQUID mixture of two metals called?

Answer 1

Copper(II) oxide can be reduced by hydrogen and its formula determined. Natural gas (mainly methane) can also be used as a reducing agent, but the reaction is much slower. ... Natural gas (mainly methane) can also be used as a reducing agent, but the reaction is much slower.

An alloy is a mixture or metallic-solid solution composed of two or more elements. Examples of alloys include materials such as brass, pewter, phosphor bronze, amalgam, and steel

Answer 2

When hydrogen is passed through copper oxide it gets reduced to copper. I guess the liquid mixture of two or more metals or a metal and non metal is called alloy.