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Does the crystal have the same melting point and freezing point? Why is that?
The melting point and freezing point of the same crystal are the same, but the melting point and freezing point of different crystals are different
The melting point refers to the critical temperature at which a crystal changes from a solid state to a liquid state. The freezing point is the critical temperature at which a crystal changes from a liquid state to a solid state, which is obviously the same. For example, under normal conditions, the melting point and the freezing point of water are zero degrees Celsius. When the temperature is greater than zero degrees Celsius, the water is a liquid state. When the temperature is less than zero degrees Celsius, the water is solid ice
The melting temperature of crystals is called _____, and the melting temperature of ice is _____. The melting point of different crystals is _____. E Urgent. The melting temperature of the crystal is _____, and the melting temperature of the ice is _____. The melting point of different crystals is _____. The solidification point of the same crystal is the same as _____.
Melting point 0°C different melting point
RELATED INFORMATIONS
- 1. The temperature of a crystal () is called the melting point, and the temperature at () is called the melting point and the freezing point of the same crystal The temperature of a crystal () is called the melting point, and the temperature at () is called the melting point and the freezing point of the same crystal ()
- 2. What does the melting point of a crystal have to do with it
- 3. If the melting point of the sea wave is 48°C, which state is the sea wave at 48°C () A. Solid State B. Liquid C. Solid-liquid coexistence state D. All three scenarios are possible
- 4. Can both benzene and ethylene decolor the carbon tetrachloride solution of bromine? Why?
- 5. Reaction equation of ethylene with potassium permanganate?
- 6. THE PRINCIPLE OF SULFUR DIOXIDE DECOLORATING MAGNESIUM PERMANGANATE AND MAGNESIUM PERMANGANATE
- 7. What can discolour acidic potassium permanganate solutions? What can discolour acidic potassium permanganate solutions? What I know is ethylene. What else? Do these substances have any common features or patterns? What can discolour an acidic potassium permanganate solution? What can discolour an acidic potassium permanganate solution? What I know is ethylene. What else? Do these substances have any common features or patterns? What can fade an acidic potassium permanganate solution? What can fade an acidic potassium permanganate solution? What I know is ethylene. What else? Do these substances have any common features or patterns?
- 8. Pig iron and pure iron Pig iron and pure iron react with 4 mol/L HCl respectively, the rate is fast, why.
- 9. If the complete addition reaction of 1 mol of ethylene with chlorine gas is carried out, and then the substitution reaction of the addition reaction product with chlorine gas occurs under the condition of light, the total amount of chlorine gas consumed in the two processes is () A.3 mol B.4 mol C.5 mol D.6 mol If the complete addition reaction of 1 mol of ethylene with chlorine gas is carried out, and then the substitution reaction of the addition reaction product with chlorine gas is carried out under the condition of illumination, the total amount of chlorine gas consumed in the two processes is () A.3 mol B.4 mol C.5 mol D.6 mol
- 10. There are two bottles of colorless solution A and B with damaged label in the laboratory. It is concluded that they can only be dilute hydrochloric acid and sodium chloride. Please distinguish them by chemical method In the case of no acid - base indicator, pH test paper to choose a reagent distinction. Keywords selected reagent; experimental phenomenon and conclusion; Does HCl Solution Evaporate Solvent Precipitate Crystals There are two bottles of colorless solution A and B with damaged label in the laboratory. It can only be concluded that they are dilute hydrochloric acid and sodium chloride. Please distinguish them by chemical method In the case of no acid - base indicator, pH test paper to choose a reagent distinction. Keywords selected reagent; experimental phenomenon and conclusion; Does HCl Solution Evaporate Solvent Precipitate Crystals There are two bottles of colorless solution A and B with damaged label in the laboratory. It can only be concluded that they are dilute hydrochloric acid and sodium chloride. Please distinguish them by chemical method In the case of no acid - base indicator, pH test paper to choose a reagent distinction. Keywords selected reagent; experimental phenomenon and conclusion; Will crystals precipitate from the evaporating solvent of HCl solution
- 11. The melting point of the sea wave is 48°C, so the sea wave at 48°C may be the state of () A. Solid State B. Liquid C. Solid-liquid coexistence D. All of the above are possible
- 12. After heating to the melting point of 48°C, continue to raise the temperature. What is the state of the sea wave at 90°C? After heating to the melting point of 48°C, what is the state of the sea wave at 90°C?
- 13. What is the state of the crystal at its melting point
- 14. A sea wave is a crystal whose melting point is 48°C, so a sea wave whose temperature is 48°C, its state is () Why the melting temperature doesn't mean you have to melt? A sea wave is a crystal whose melting point is 48°C, so a sea wave whose temperature is 48°C, its state is () Why the melting temperature doesn't mean it has to melt
- 15. The Law of Melting Point in the Periodic Table of Elements For example, what is the law of the boiling point and melting point of the elements in the periodic table? The melting point and boiling point of S and Cl are compared regularly. Just answer the questions.
- 16. How to remove K2SO4 and K2CO3 mixed in KCl
- 17. Only one reagent is used to identify the following substances: benzene, CCl4, NaI solution and NaCl solution. The following reagents can not be selected: A bromine water B chlorine water solution C% Only one reagent is used to identify the following substances: benzene, CCl4, NaI solution, NaCl solution. Among the following reagents, the following can not be selected: A bromine water B chlorine water solution C potassium iodide-starch solution D Ag No 3 solution …… I know the answer, the next two answers are wrong, should choose C You're the only one who's doing that serious analysis, But it's layered. I' m speechless.
- 18. If the relative atomic mass of an element R is 32 and the oxide formed by the element R contains 60% oxygen, the chemical formula of the oxide is ____
- 19. The difference between stainless steel and carbon steel and high carbon steel
- 20. What is the melting point (freezing point) of the sea wave?