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At melting point A must be solid B must be liquid C must be solid liquid D solid, liquid or solid liquid
Why should I choose B the relationship between crystal and amorphous. Crystal: melting point, all the metal is crystal. Amorphous: melting slowly when heating, such as candle wax, and sea waves, when heating is the coexistence of solid night. Then why I choose B, simple with the test explanation, a section of solder wire, I electric soldering iron, he will see...
B. This relates to the relationship between crystal and amorphous. Crystal: melting point, all the metal is crystal. Amorphous: slowly melting when heating, such as candle wax, and sea wave, when heating is solid night coexistence. Then why I choose B, simple with the test explanation, a section of solder wire, I electric soldering iron heating him, will see part.
B. This relates to the relationship between crystal and amorphous. Crystal: melting point, all the metal is crystal. Amorphous: slowly melting when heating, such as candle wax, and sea waves, when heating is the coexistence of solid night. Then why I choose B, simple with the test explanation, a section of solder wire, I electric soldering iron heating him, you will see...
Must the crystal be solid-liquid coexistence state when it reaches the melting point or solidification point
It is either solid or liquid at first, but it is only for a very short period of time, and must coexist during melting or solidification
RELATED INFORMATIONS
- 1. At the melting point, must the crystalline material be solid-liquid coexistence? Must the crystalline material be solid-liquid coexistent at the melting point?
- 2. What is the melting point (freezing point) of the sea wave?
- 3. The difference between stainless steel and carbon steel and high carbon steel
- 4. 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 ____
- 5. 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.
- 6. How to remove K2SO4 and K2CO3 mixed in KCl
- 7. 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.
- 8. 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
- 9. What is the state of the crystal at its melting point
- 10. 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?
- 11. About the crystal and the melting point We all know that a crystal has a certain melting point. However, people observe that in winter, when the same person is standing on the outdoor ice in ordinary shoes, the ice does not melt, but after wearing the ice shoes, the ice at the blade can melt; a large piece of ice is supported by a bracket, and a thin iron ring is fastened. When a heavy object is hung under the ring, the ice under the iron wire melts into water, and when the iron wire falls behind, the water above can condense into ice. Can you guess one of the reasons?
- 12. Ca cao caco3 ca (oh)2 How many chemical formulas can be written in total
- 13. Classification of the following substances:ca cl2 cacl2 H2so4 cao caco3 ca (oh)2
- 14. Ion Equation for the Reaction of SO3 with Ca (OH)2
- 15. Ion Equation for the Reaction of ca (oh)2 with Nahco 3 Ion Equation for the Reaction of ca (oh)2 Solution with Nahco 3 Solution
- 16. What is wrong with the phrase that both benzene and ethylene can fade bromine-based carbon tetrachloride solutions?
- 17. Can carbon tetrachloride solution of aldehyde and bromine react? What is the equation Can the carbon tetrachloride solution of aldehyde and bromine react? What is the equation
- 18. The mass of the brominated carbon tetrachloride solution was increased by 8.4 g after the mixture of 11.2 L (standard condition) ethylene and ethane was introduced into a sufficient amount of brominated carbon tetrachloride solution. A mixture of 11.2 L (standard condition) ethylene and ethane is introduced into a sufficient amount of bromine-based carbon tetrachloride solution. After a sufficient reaction, the mass of bromine-based carbon tetrachloride solution is increased by 8.4 g to obtain the mass ratio of ethylene to ethane in the raw gas mixture. A mixture of 11.2 L (standard condition) ethylene and ethane is introduced into a sufficient amount of bromine-based carbon tetrachloride solution. After the reaction, the mass of bromine-based carbon tetrachloride solution is increased by 8.4 g to obtain the mass ratio of ethylene to ethane in the raw gas mixture.
- 19. When there are MgCl2, NaSO4 there are MgCl2, NaSO4 and CaCL2 in NaCl to remove impurities with NaOH Na2CO3 BaCL2 Why there are MgCl2, NaSO4 and CaCL2 in NaCl to remove impurities with NaOH Na2CO3 BaCL2, why does bacl2 have to be excessive
- 20. The problem of boiling point of alkali metal From top to bottom of the periodic table of alkali metals, the relative atomic mass increases, i.e. the intermolecular force increases constantly, the melting boiling point increases, but in fact, the melting boiling point decreases. Why?