* Crystals are solids: Their atoms are arranged in a highly ordered, repeating pattern. This gives them their characteristic shape and properties.

* Melting breaks that order: When a crystal melts, the heat energy causes the atoms to vibrate so much that they break free from their rigid structure. This results in a disordered, liquid state.

* The liquid form varies:

* Some crystals melt into clear liquids: Think of ice melting into water.

* Others melt into opaque liquids: Like when metal is melted, the liquid can look cloudy or even glow depending on the metal and temperature.

* Some crystals decompose before melting: They break down into different substances instead of simply changing their state.

So, to know how a specific crystal looks when melted, you need to know what type of crystal it is.

Let me know if you have a particular crystal in mind, and I can help you find information about its melting point and the appearance of its liquid form!