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The melting point of a substance is based upon the polarity of the bonds that make up the substance. In water, the O-H bond has a difference in electronegativity of 1.4 (Pauling's Scale) and in ammonia, the N-H bond has a difference in electronegativity of .9. Therefore, it takes more energy to break apart the O-H bond because the polarity is so great, and this is why it has a higher melting point than ammonia.
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How do you think the melting point of salt water compares to that of pure water?
The melting point of salt water is even lower than pure water.
What effect does sugar have on ice?
yes but not to the same extent. solutes prevent ice formation by lowering the melting point of water. sugar water does have a lower melting point than pure water but it is not as effective as simpler salts because it is less soluble. (conc. of solutes is related to the melting point)
What is freezing point and melting point of a tennis ball?
The freezing temperature of water is 32 degrees feranheit. I'm not sure what the melting temperature is 2nd Answer: The melting or thawing point of ice is, oddly enough, also 32 degrees Fahrenheit. (0 degrees, Celsius)
Can Small amounts of water can lower partial melting temperatures in silicate rocks?
The addition of water can lower partial melting temperatures in silicate rocks.
What is a melting point of h20?
H2O is water. The melting point of water is 0oC or 32oF
What is the meaning of melting point of ammonia and boiling point of ammonia?
The meaning is at what temperature does ammonia melt at and what temperature does ammonia boil at? for eg. waters melting point is 0 degrees celcius and the boiling point of water is 100 degrees celsius
How do you think the melting point of salt water compares to that of pure water?
The melting point of salt water is even lower than pure water.
Goes salt lower boiling temperature of water?
Salt will lower the melting point, and raise the boiling point of water.
When ethylene glycol is added to water the melting point of water is?
Ethylene glycol is antifreeze. The mixture has a lower melting point than pure water.
Does H2O have a lower melting point then CO2?
You would need to look at a temperature / pressure graph
Why does plastic have a lower melting point than water?
Water can't melt!!!
What are the boiling and melting point's of salty water?
That depends on how much salt is dissolved in the water. Generally, the boiling point will be higher than for pure water, and the melting point will be lower than for pure water.
How does sprite melt fast?
It has a lower melting point than water.
Why is the boiling point lower than melting point?
It is the opposite. The boiling point is greater than the melting point. for example for fresh water, the boiling point is 100 centigrade while the melting point (for ice) is zero.
Why is the melting point of impure water lower than the melting point of pure water plus how can this be explained?
the melting point of IMPURE water is lower because excess chemicals and sediments (and whatever else making it impure) get in the way of the water freezing directly by making it so that when the the water froze, it also had to freeze the sediments and chemicals (or else it wouldn't be frozen)
Which is colder frozen water or frozen salt water at melting points?
The freezing point of salted water is lower compared with the freezing point of pure water. So when melting frozen salt water is colder.
Lower the melting point of wax?
I use Petroleum Jelly, (Vaseline) in my wax and it lowers the melting point a bit.
