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Crystals have a fixed melting point, whereas amorphous ones do not. So, how to tell if a substance is crystalline or amorphous? Crystals have a fixed melting point, whereas amorphous ones do not. So, how to determine whether a substance is crystalline or amorphous?
When the crystal is heated for a period of time, the temperature does not change, and the amorphous temperature always changes
Chemical Equations for Quicklime to Mature Lime and hydrated Lime to Calcium Carbonate Chemical Equations for Lime to Mature and hydrated Lime to Calcium Carbonate
CaO+H2O=Ca (OH)2
Ca (OH)2+CO2=H2O+CaCO3
RELATED INFORMATIONS
- 1. The melting point and boiling point of toluene and benzene are higher
- 2. The difference between water boiling and water decomposition to produce hydrogen and oxygen is analyzed by whether and atoms change in chemical change. Analyze the difference between water boiling and water decomposition to produce hydrogen and oxygen by whether molecules and atoms change in chemical change.
- 3. It can not be concluded from the experiments of electrolytic water that A is separable by molecules and not by atoms in chemical reactions B contains oxygen and hydrogen C water is formed by oxygen C water is the smallest particle in chemical change. Which one? It can not be concluded from the experiments of electrolytic water that A is molecularly separable and atomicly indivisible in the chemical reaction B contains oxygen and hydrogen C water is formed by oxygen C water is the smallest particle in chemical change. Which one?
- 4. Hydrogen and oxygen react chemically to produce water in a weight ratio of 1:8. Hydrogen is known to be 1.6 kg. How much kg does oxygen need? How many kg can be produced The water?
- 5. Ask you why water produces oxygen and hydrogen through a chemical reaction create an extra oxygen atom Ask you a question. Why does water produce oxygen and hydrogen through a chemical reaction? Ask you why water reacts chemically to produce oxygen and hydrogen to create an extra oxygen atom
- 6. Is the essence of the reaction of NaClO+SO2+H2O the reaction of NaClO with H2SO3? What else is that H2O doing here?
- 7. The ionic equation for the reaction of SO2 with NaClO solution is SO2+ClO-+2OH-=SO42-+Cl-+H2O Or SO2+ClO-+H2O=SO42-+Cl-+2H2+, is NaClO alkaline?
- 8. Does water have a boiling point of 100 degrees Celsius at a standard atmospheric pressure? It's best to justify! Does water have a boiling point of 100 degrees Celsius at a standard atmospheric pressure? It's reasons!
- 9. Why is the boiling point of water less than a standard atmospheric pressure? The boiling point of water is 100 degrees, but now it's 97 degrees.
- 10. Can the temperature of the liquid exceed the boiling point at standard atmospheric pressure? Doesn't the boiling point of the liquid change? Is it possible? What is a state if exceeded? It's when the air pressure does n' t change that it seems to be related to the critical temperature. For example, water can reach 138 degrees Celsius and alcohol can reach 30 degrees Celsius. Can the temperature of the liquid exceed the boiling point at standard atmospheric pressure? Doesn't the boiling point of the liquid change? More than possible? What is a state if exceeded? It's when the air pressure does n' t change that it seems to be related to the critical temperature. For example, water can reach 138 degrees Celsius and alcohol can reach 30 degrees Celsius.
- 11. Chemical Equation for Reaction of Chlorine with Hydrogen with Copper Wire and Water Chemical Equation for the Reaction of Chlorine with Hydrogen with Copper Wire and Water
- 12. Chemical equation of reaction of carbon dioxide
- 13. Chemical Reaction of Oxygen and Hydrogen
- 14. The volume ratio of hydrogen to oxygen produced in the actual experiment when electrolyzing water is more than half When we electrolyze water, what should we choose as electrodes to make the experiment successful The volume ratio of hydrogen to oxygen produced in the actual experiment when electrolyzing water is more than half When we electrolyze water, what should we choose as an electrode to make the experiment successful
- 15. Volume ratio of oxygen to hydrogen in electrolysis of water? In the experiment of electrolytic water, the gas volume in the negative scale tube connected to the power supply is _____, and the gas volume in the positive scale tube connected to the power supply is _____, and the ratio of them is about ______. Volume ratio of oxygen to hydrogen in electrolysis of water? In the experiment of electrolytic water, the volume of gas in the negative scale tube connected to the power supply is _____, and the volume of gas in the positive scale tube connected to the power supply is _____, the ratio of which is about ______.
- 16. Why does the positive electrode produce oxygen and the negative electrode produce oxygen and the negative electrode hydrogen? The answers are very different ~
- 17. FORMULA FOR HYDROGEN AND OXYGEN GENERATION FROM ELECTROLYTIC WATER Formulae for Hydrogen and Oxygen Generation from Electrolyzed Water
- 18. When electrolyzing water, the bulk of the product is small, and the experiment proves that what can be separated and what can not be separated in the chemical reaction When water is electrolyzed, what is large and what is small and the experiment proves that what can be separated and what can not be separated in the chemical reaction
- 19. The reaction of electrolytic water shows that the essence of chemical reaction is.
- 20. The mass ratio of hydrogen to oxygen obtained by electrolysis of water is () A.2:1 B.4:8 C.1:16 D.1:8