Hey Scholars!!!
This week is one of our easiest topics we will be covering in Chemistry: The changes in states of matter. For this weeks post try and find a substance with either then lowest melting point or the highest boiling point. The most extreme on each will win a prize. (remind me)
Happy Hunting
Mr. D
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9 comments:
hey mr. d water has a low melting point
well mr. dillman i found out that graphite which is made up of the element carbon has a melting point of 3,675 °C or 3,948 K
Tantulum Hafnium Carbide at 4215 degrees C, has the highest boiling point.
http://www.answerbag.com/q_view/282452
The lowest Melting point i found was rubbing alcohol which was -89 Degrees Celsius.
http://cactus.dixie.edu/smblack/chem1010/lecture_notes/1G.htm
the highest melting point is zircar or zirconia and melts at 5000C
http://www.physicsforums.com/showthread.php?t=74527
Lowest melting point helium -272 Celsius
1. SiO2. This is macromolecular (it is sand) Very high m.p. and b.p. S02 is simple covalent molecules.
2. LiF has slightly higher m.p and b.p. than CsI. LiF has a greater lattice energy.
3. C5H12 has a higher m.p. and b.p. It is a larger molecule and has a greater degree of van der waals (london) forces
Rhenium has the highest boiling point of the elements
Boiling point 5596 °C (10105 °F)]
helium has a very low melting point of -272.2 degrees celcius
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