Does glass sag over time? Glass, usually made of silicon dioxide,doesn't change its shape over the short timescales relevant to humans, says chemist Paddy Royall of the University of Bristol, England. (If it doe
Explain why graphite has a lower melting point than diamond even though both are carbon compounds. Why does carbon make up all organic molecules? Why not silicon, which is also in the 4th group of the periodic table? Why does graphite conduct elec...
Why does diamond have a lower entropy compared to graphite? Entropy Entropy is the degree of disorder of a system. It is measured by the molecular disorder or the randomness of the system and is observed in the environment whenever a system is left to obey its own tendency to approach its...
I have come is the derivation of the logrithmic equation which does not reference any laws of physics and has many unsubstantiated assumptions. This plusthe amplification factor due to increased high level clouds is the IPCC’s basis for predicting increased temperatures. The high cloud effect...
While this is in part true, there are some issues with such a simple definition. What about asteroids? When does an object become large enough to be considered a planet? Why are Venus and Mercury planets (according to current classifications) but not Pluto? As it turns out, the reasons ar...
But burning a log and releasing all that CO2 does not tamper with the atmosphere’s carbon levels. Why? Because the carbon that’s being released was recently in the atmosphere, and if you hadn’t set the log on fire, it would have likely decomposed, which would release the carbon back...
Glass is made from sand or rocks which contains mostly silicon dioxide (SiO2) mixed with sodium oxide (Na2O) from soda ash, calcium oxide (CaO) from limestone or dolomite, magnesium oxide (MgO) from dolomite, and aluminum oxide (Al2O3) from feldspar. In short, we will melt the raw ...
Explain the trend in melting point of metals across period 3 elements. Explain how some solids (compounds that are solids at room temperature) can be analyzed by gas chromatography. Why would metal make a poor ingredient in a heat p...