Liquid
solid.
A liquid or solid (not a liquid gas)
The antonym of oxygen is a solid.
nonmetals are the opposite of metals which can be seen on the periodic table. But it has also been argued that liquid is one type of opposition to metal. Here is their theory: metal is a type of solid, except mercury, and the opposite of of a solid is liquid, thus metal is, in a sense, the opposite of a metal.
The opposite action of boiling (liquid to gas, evaporation) is condensing.At the other end of the liquid phase, the opposite would be freezing (liquid to solid).
solid.
Liquid
The opposite phase change (solid to liquid) is liquefaction.Where it means to strengthen or coalesce, the opposite could be fragmentation.
solid
Stuipid
sturdy, solid
Yes, an antonym is the opposite, and since solid means that it is full on the inside, while hollow means to be empty, so they are the opposite
If you mean solid as a state of matter, there are three (the other two are liquid and gas) so there is not one that is exactly an opposite of one ofthe others. If you are using solid to mean sturdy or well-constructed, one opposite would be flimsy.
An non-example of a crystalline solid would be the complete opposite of it, an amorhous solid.
If the type of solid (die) is a Platonic solid, then the opposite sides add to the number of faces plus one. For example, a cube's opposite sides add to seven.
The opposite of congeal is liquefy. When a substance liquefies, it changes from a solid to a liquid state.
When something solidifies, it turns from a gas or a liquid to a solid. The opposite of something turning from a liquid or gas to a solid would be something turning from a solid to a liquid or gas. Now, there's a word for something turning from a solid to a gas, but it's not in common use; and very few things go straight from solid to gas (dry ice is one example). So the most appropriate answer would be the word for something turning from solid to liquid, which is "liquify".