Can any solid become liquid and what causes solids to become liquid?

No. There is one possibility: sublimation.

Sublimation: refers to the phenomenon that solid substances are directly transformed into gaseous states without going through the liquid state, and can be used as a method for separation by applying solid-gas equilibrium. Some substances (e.g. oxygen) have a high vapor pressure when they are solid, so they can be heated and turned into water vapor without melting, and when condensed, they can revert to ice.

The temperature at which the vapor pressure of a solid substance is equal to the external pressure is called the sublimation point of the substance. At the sublimation point, sublimation occurs not only on the surface of the crystal, but also inside it, and the effect is very violent, and it is easy to bring impurities into the sublimation product. In order for sublimation to occur only on the surface of the solid, it is usually always carried out at a temperature below the sublimation point, when the vapor pressure of the solid is lower than the internal pressure.

Examples: dry ice, iodine.

Hope my answer will be helpful to you.

In fact, dry ice directly becomes gaseous because the temperature is not artificially controlled, in fact, the temperature is controlled at the melting point and there is a liquid state.

Theoretically, any solid can become liquid, as long as the temperature conditions are met.

Give me points, my yes.

I think it should be okay too, because gases can become liquids by compressing the volume and lowering the temperature, and solids should be able to become liquids directly or indirectly.

No way. Like dry ice, it shouldn't be. Directly gaseous.

Hello! Not upstairs.

Any substance has its freezing point and melting point.

In other words, for a substance, a solid liquid.

All have.

Hope my answer is helpful to you.

No, like diamonds.

Support the first floor Carbon dioxide is not in a liquid state, and it changes directly from a solid state to a gaseous state.

The change from liquid to solid is solidification. The change of matter from a liquid state to a solid state is called solidification, and solidification is an exothermic process; The change of a substance from a gaseous state to a liquid state is called liquefaction, and liquefaction is an exothermic process; Solidification is the process of phase transformation of a substance from a liquid phase to a solid phase. A liquid crystalline substance emits heat during the solidification process (called the heat of solidification, a value equal to the heat of melting), and its temperature remains constant during the solidification process until the liquid is completely crystalline.

Conditions for Liquid to Solid:1. The temperature reaches the freezing point.

2. Continue to release heat after reaching the freezing point.

Note: The melting and solidification of crystals is done at a certain temperature, which is called the melting point and the freezing point, respectively. Noncrystals do not have a certain melting and freezing point. However, both crystalline and amorphous are endothermic when melted and exothermic when solidified.

1. The frozen ice in the refrigerator turns into water;

2. Animal oils such as lard and sheep fat are solid at room temperature and become liquid after heating;

3. The candle is solid at room temperature and becomes liquid after heating;

4. Soap and soap are solid at room temperature and become liquid after heating;

5. Asphalt (asphalt) is solid at room temperature and becomes liquid after heating;

6. Metals, such as iron, copper, tin, lead, etc., are solid at room temperature, and when heated to their melting point, they will also become liquids.

There are animal fats such as ice cream, lard, and mutton fat, after heating. Winter snow and ice.

Solid alcohol, ice cream, cheese, lard, etc.

Liquid becoming solid is called solidification. The definition of solidification is the process by which a substance changes from a liquid state to a solid state when the temperature decreases, which is called solidification. Of the known liquids, almost all of them, with the exception of helium, can solidify into a solid at low temperatures, and helium needs to be pressurized to solidify into a solid.

Crystallization reactionThere are many people who will have a crystallization reaction when the liquid solidifies into a solid, and this process is a first-order thermodynamic phase change, during the coexistence of the liquid state, the equilibrium temperature of the system does not change, which is equal to the freezing point. Crystallization mainly includes two phenomena: nucleation and crystal growth.

Nucleation is when molecules begin to aggregate to form crystal nuclei, arranged at the nanoscale in a defined periodic pattern, and the arrangement of the molecules determines the crystal structure. Crystal growth is the continuous growth of the crystal, and finally reaches the critical size of the crystal nucleus.

Exothermic reactionHalf of the solidification process is exothermic reaction, that is, when the liquid phase becomes solid, pressure and energy energy will be released, which is somewhat counterintuitive, because except for supercooled liquids, the temperature of the liquid does not rise when it solidifies, but if the energy cannot be continuously removed from the liquid, the solidification process will stop. The energy released by solidification is latent heat, commonly known as the heat of melting, which is also equal to the energy required by the same amount of solid when melting.

Solids, liquids, and gases are the three common states in which matter exists, and the changes between them can be explained by the mechanical properties of matter, intermolecular interactions, and energy states.

1.Solid-to-liquid change (melting):

When a solid is heated, the vibrations of its molecules or atoms intensify, the energy increases, overcoming the intermolecular force of attraction so that the structure of the solid begins to break the chain. When the melting point temperature is reached, the solid starts to melt into a liquid. In liquids, the intermolecular force of attraction is comparatively weaker, allowing the molecules to move more freely.

2.Liquid-to-gas change (vaporization, evaporation) state call hole:

When the liquid is subjected to an increase in heat or a decrease in external pressure, the energy of the molecules of the liquid increases, making the kinetic energy of the molecules increase. On the surface of a liquid, a portion of the molecules is able to gain enough energy to overcome the surface tension and escape into a gaseous state, a process known as evaporation or vaporization. As more molecules in the liquid sail wither are gradually converted into gases, the liquid gradually evaporates completely.

3.Change from solid to gas (sublimation):

In some substances, the process of direct transformation from a solid state to a gaseous state is known as sublimation. When a solid is subjected to heat or pressure, the molecules of the solid gain enough energy to overcome the interaction forces between the solids, i.e., the molecules of the solid are transferred directly from the tightly packed solid structure to the gaseous state.

These changes are achieved by heating, cooling, increasing or decreasing the pressure, etc. The specific process of change depends on the properties of the substance and external conditions.

The change of a solid state into a liquid state is called melting. Melting is the process of heating a substance to change it from a solid state to a liquid state. It is one of the more common types of state of matter.

Melting requires the absorption of heat and is an endothermic process. Crystals have a certain melting temperature, which is called the melting point. Amorphous does not have a certain melting temperature.

The reverse process of melting is solidification.

Coagulation is the reverse process of melting, annihilation, and teasing. Experiments have shown that both crystalline and amorphous are emitted heat during solidification. The temperature of the crystal remains the same during the solidification process, and this temperature is called the freezing point of the crystal.

The freezing point of the same crystal is the same as the melting point. Amorphous has no freezing point and no melting point.

1. Liquid to solid state is called solidification. Liquids have fluidity, and the liquid has the shape of whatever shape it is placed in a container. When the van der Waals force between the molecules of a liquid object is broken, the object changes from a liquid state to a gaseous state.

2. When the Van de Bi force between the molecules of the liquid object is broken, the object changes from a liquid state to a gaseous state; When the intermolecular thermal motion of the liquid object decreases so small that intermolecular bonds can be formed, so that the chemical bonds dominate between molecules, the liquid becomes solid.

3. Liquids are different from solids, and liquids also have the characteristics of "isotropic" (the same physical properties in different directions), because when the object changes from a solid state to a liquid state, due to the increase in temperature, the molecules or atoms move violently, and it is impossible to maintain the original fixed position. However, the attraction between molecules or atoms is still relatively large, so that they do not disperse and move away.

4. The liquid state is different from the gaseous state, it has a certain volume. The liquid state, unlike the solid state, is fluid and therefore does not have a fixed shape. With the exception of liquid crystals, liquid and amorphous solids are isotropic, which are the main macroscopic characteristics of liquid states.