sir i have a doubt. my ques is how can be the melting point of ice be 0 degreecelcius ? A SOLID CONVERTS INTO LIQUID WHEN WE INCREASE THE TEMP. BUT 0 DEGREE CELCIUS IS A VERY LOW TEMP THEN HOW CAN A SOLID MELT AT THAT TEMP ? ALSO, WHAT IS THE FREEZING POINT OF WATER.
Solution:
For the first part of your question, the melting point of a solid is its characteristics property. Based on the type of bonding and molecular packing, solids have different melting points. Water (H2O) is a liquid due to hydrogen bonding but the higher member in its family H2S is gas in spite of having a higher molecular mass.
For the second part, yes solids convert into a liquid with an increase in temperature but the lowest possible temperature is absolute zero which is 0 K or -273.15C. Now, 0 C is a relatively high temperature if you compare it with respect to absolute zero.
The freezing point of pure water is 0C or 273.15 K
For the first part of your question, the melting point of a solid is its characteristics property. Based on the type of bonding and molecular packing, solids have different melting points. Water (H2O) is a liquid due to hydrogen bonding but the higher member in its family H2S is gas in spite of having a higher molecular mass.
For the second part, yes solids convert into a liquid with an increase in temperature but the lowest possible temperature is absolute zero which is 0 K or -273.15C. Now, 0 C is a relatively high temperature if you compare it with respect to absolute zero.
The freezing point of pure water is 0C or 273.15 K