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Anonymous users2024-02-07Change of state of matter. The encyclopedia explains the change of state of matter as follows:
Change of state of matter. The change of state of matter refers to the change relationship between solid gases and liquids.
The first is the solid state and liquid state of the substance, the relationship between the two, when the substance is converted from the solid state to the liquid state, this phenomenon is called melting, and the melting should be endothermic, such as ice absorbing heat and melting into water, on the contrary, when the substance is converted from a liquid state to a solid state, this phenomenon is called solidification, and solidification should be exothermic, such as water being exothermic and solidified into ice. In these solids that are converted from solid to liquid state, they are divided into crystalline and amorphous, crystals have a melting point, that is, they will melt when the temperature reaches the melting point, and the temperature will not be higher than the melting point, and the amorphous does not have a fixed melting point, so the melting temperature is uncertain.
Then there is the change relationship between the gaseous state and the liquid state of the substance, the substance is converted from the liquid state to the gaseous state, this phenomenon is called vaporization, and there are two ways of vaporization and boiling, vaporization should absorb heat, the liquid has a boiling point, when the temperature reaches the boiling point, the temperature will not rise again, but it is still absorbing heat; When a substance is converted from a gaseous state to a liquid state, this phenomenon is called liquefaction, and liquefaction requires exothermy. For example, water vapor liquefies into water, and water evaporates into water vapor.
Finally, the relationship between the solid state and the gaseous state of the substance, which is not common to us, the direct conversion of the substance from the solid state to the gaseous state, this phenomenon is called sublimation, and then the direct conversion of the substance from the gaseous state to the solid state, which is called condensation, sublimation endothermy, and condensation exothermic.
This is the relationship between the three of the change of the state of matter, and their conversion is mainly based on temperature.
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Anonymous users2024-02-06Solids, liquids, melts, and endothermy.
Solid gas sublimation is endothermic.
Liquid gases vaporize endothermic and have boiling and evaporation.
Gases, liquids, liquefaction, exothermics.
Gases, solids, condensations, exothermics.
Liquids, solids, solidification, exothermics.
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Anonymous users2024-02-05Solid--、 liquid 、-- gas.
Melting, vaporization, sublimation, solidification, liquefaction.
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Anonymous users2024-02-04The process of changing from a liquid state to a gaseous state is vaporization. The vaporization temperature does not change.
When all of it turns into gas, the temperature rises.
You can look at the object state curve. From solid-liquid-gaseous, the temperature curve is: rise--steady-rise--steady-rise--rise.
The two corresponding states of stationery are solid-liquid coexistence and gas-liquid coexistence.
Therefore, in the process of changing from liquid to gaseous state, it is a state of coexistence of gas and liquid, and the temperature remains unchanged.
Of course, it can only be discussed under the condition of purity. , 2, does not necessarily change. Water at room temperature can become gaseous without changing temperature (volatile).
The temperature can also be changed, and when all the liquid water becomes water vapor, the temperature of the water vapor is higher than that of the liquid water.
It depends on the specific situation, 2, and by all means. If it is pure, such as pure water, it has a fixed melting point. In the case of mixtures, such as oil, the temperature rises all the way during the evaporation process.
1. No change, 0, Does the temperature of the substance change from liquid to gaseous?
Can the first and third floors be described in more detail?
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Anonymous users2024-02-03The process by which a substance changes from a solid state to a liquid state is called melting.
The process by which a substance changes from a liquid state to a solid state is called solidification.
The process by which a substance changes from a gaseous state to a liquid state is called liquefaction.
The process by which a substance changes from a liquid state to a gaseous state is called vaporization.
The direct transformation of matter from a solid state to a gaseous state is called sublimation.
The process by which a substance changes directly from a gaseous state to a solid state is called condensation. Beg.
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Anonymous users2024-02-02The process by which a substance changes from a solid state to a liquid state is called melting.
The process by which a substance changes from a liquid state to a solid state is called solidification.
The process by which a substance changes from a gaseous state to a liquid state is called liquefaction.
The process by which a substance changes from a liquid state to a gaseous state is called vaporization.
The direct transformation of matter from a solid state to a gaseous state is called sublimation.
The process by which a substance changes directly from a gaseous state to a solid state is called condensation.
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Anonymous users2024-02-01b may be a physical change or a chemical change.
Like ice turning into water vapor, it is a physical change.
Charcoal is subjected to strong heat and becomes CO2 and is a chemical change.
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Anonymous users2024-01-31For example, calcium carbonate is heated to produce carbon dioxide, which is a chemical reaction.
Iodine elemental heating and sublimation into iodine vapor is a physical reaction.
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Anonymous users2024-01-30Option B, dry ice turns into carbon dioxide, is sublimation, physical change. Carbon is burned in oxygen and turning into carbon dioxide is a chemical change.
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Anonymous users2024-01-29The change in state of matter that can be made at any temperature is: evaporation.
Note] 1. Evaporation is a phenomenon that occurs at any temperature and only the slow vaporization of the liquid slag on the surface of the liquid.
2. Factors affecting the speed of evaporation:
1) The temperature of the liquid;
2) the size of the surface area of the liquid;
3) The speed of air flow on the surface of the liquid (i.e., the air flow velocity).
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Anonymous users2024-01-28There are three states of matter: solid, liquid, and gaseous Under certain conditions, these three states can be transformed into each other under certain conditions The process of transforming matter from one state to another is called the change of state of matter
So the answer is: the state of matter becomes stupid and orange
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