What is an alloy? how is an alloy made?

An alloy is a mixture of metals or of a metal and a non-metal. How they are made depends on the chemical properties of the components used, so it can vary. You can mix them when melted, you can mix them sometimes when they're solid and then a liquid alloy pops out, or in many different manners.

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid