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I don't understand how melting point = freezing point.
For example, if liquid water freezes at 0*C how can ice also melt at 0*C?
Because melting point and freezing point describe the same transition of matter, in this case from liquid to solid (freezing) or equivalently, from solid to liquid (melting).
What you may not realize is that while ice is freezing or melting, its temperature is not changing!
It is stuck on $0^o$C during the entire melting or freezing process.
It is easier to see this for boiling points.
if you put a thermometer in water and heat it, the temperature will rise until it reaches $100^o$C, and then it starts boiling.
And while it boils, it will stay at $100^o$C!
All the way until the water has all boiled away.
Now if you could somehow trap the steam (gaseous water) and keep heating it, the steam could have a temperature higher than $100^o$C.
So to sum up, when matter is transitioning from solid to liquid (melting) or liquid to solid (freezing), its temperature is fixed at the melting/freezing point, which is the same temperature.
I think this is an interesting question where the confusion is mostly due to semantics.
Let's consider a very cold ice cube in your freezer (a typical kitchen freezer has a temperature of -10 C).
When that ice cube is taken out of the freezer and placed in a warm kitchen, heat from the surroundings (air, counter top, etc.) is transferred to the ice cube.
We observe that the temperature of the ice cube increases.
The ice cube stays a cube because the energy of the intermolecular forces that keep the water molecules together is greater than the heat energy added to the ice cube so far.
At the melting point, however, there is enough thermal energy to start breaking those intermolecular forces.
What we observe is that the temperature does not rise, but bonds are breaking and the solid starts to melt.
Once all the solid melts, the temperature of the (now liquid) water can increase when thermal energy is added.
A similar explanation can be used for the reverse process (freezing water) only in this case the thermal energy is being transferred from the water to the surroundings.
So we come to your question, how can melting point = freezing point.
This "point" is the temperature at which the solid and liquid forms of the molecule are in equilibrium.
When we use a term like melts oftentimes we mean melts completely.
In this case, the temperature of the liquid would be just beyond above the melting point.
If a material's equilibrium melting and freezing points were non-identical, you would have a perpetual motion machine of the first kind.
Go head, trace the energy flows for temperature versus specific heats and latent enthalpies of transition.
Cycled divergent vapor pressures at the differing transition temperatures would power a perpetual wind generator.
Ya gotta think about these things. e.g., water below,
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influence of si on stability of tic in al melts
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si对tic在铝熔体中稳定性的影响
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3秒自动关闭窗口请尽力答,我先给15分,反正只有5分了,答得好,①I don`t know why J( ),it isn`t his problem.A.above all B.at all C.ater all D.in all我选择C,我认为：A答案的above all表示首先,首要,最重要的是,特别是,_百度作业帮
拍照搜题，秒出答案
请尽力答,我先给15分,反正只有5分了,答得好,①I don`t know why J( ),it isn`t his problem.A.above all B.at all C.ater all D.in all我选择C,我认为：A答案的above all表示首先,首要,最重要的是,特别是,
请尽力答,我先给15分,反正只有5分了,答得好,①I don`t know why J( ),it isn`t his problem.A.above all B.at all C.ater all D.in all我选择C,我认为：A答案的above all表示首先,首要,最重要的是,特别是,我感觉不太符合；B答案的at all表示根本,我也觉得不太符合；C答案的after all表示终究,毕竟,我就觉得很适合了,句意就为“我不知道为什么杰克如此担忧；毕竟,这不是他（应该担忧）的问题；D答案的in all表示总共；简言之,总之,自然也不符合了.你同意我的观点吗,如果不同意,②短语“so 如果不知道就不用回答.
1、同意你的答案,但是你的回答思路不对,没搞清真正的意思.首先你把I don`t know why Jack is so worried；的意思搞错了,这是一句否定转移的句式,正常的句子是I know why Jack is not so worried；（我知道为什么杰克比那么担忧了；）根据后面的“这不是他的问题”,可以得出答案是c,毕竟.2、这不是一个词组,不同的句子有不同的含义.
选C同意“so later”不是 如此晚的意思吗？
so later是那么晚了同一
“so later”就是“（某一个时间）之后”