A solid is something that's , well - solid. Hard, holds a shape, etc.
A liquid is something that's runny and hasn't got a shape of its own.
A solid turning into a liquid.
When a substance is melting, there is equilibrium between the solid and liquid state, meaning it is both a solid and a liquid.
Jelly is a solid, although it is rather viscous.
Simplified : crust is the outer solid rock, mantel is liquid rock, and core is metal (both liquid and solid).
The scientific meaning for melt is the process of a substance changing from a solid to a liquid state due to an increase in temperature. This phase transition involves the absorption of heat energy to break the bonds between the molecules in the solid structure.
Solubility
Decantation usually refers to pouring liquid. It can be just pouring liquid from one container to another, or removing the liquid from a solid sediment by pouring the liquid off and leaving the solid behind.
liquid
Glass is a solid, not a liquid. Despite its appearance, glass is actually an amorphous solid, meaning its molecules are arranged in a disordered fashion, similar to a liquid, but they are still fixed in place like a solid. This is why glass does not flow or change shape over time like a liquid would.
solid liquid
Ooblek is a non-Newtonian fluid, meaning that it can behave as both a liquid and a solid depending on the force applied to it. It flows like a liquid under low stress but can harden and resist force like a solid under high stress.
Liquid.