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Recent changes; Upload file; Search. Search. Appearance. ... Kanekalon could refer to: ... Synthetic dreads or other synthetic hair products made out of such material
The solid dissolves readily in water, and its solutions have a salt-like taste. Potassium chloride can be obtained from ancient dried lake deposits. [ 7 ] KCl is used as a fertilizer, [ 8 ] in medicine , in scientific applications, domestic water softeners (as a substitute for sodium chloride salt), and in food processing , where it may be ...
Water is a simple three-atom molecule, H 2 O, and all its electronic absorptions occur in the ultraviolet region of the electromagnetic spectrum and are therefore not responsible for the color of water in the visible region of the spectrum. The water molecule has three fundamental modes of vibration.
Lead(II) oxide exhibits a similar color change on heating. The color change is linked to changes in the electronic properties (energy levels, populations) of these materials. More dramatic examples of thermochromism are found in materials that undergo phase transition or exhibit charge-transfer bands near the visible region. Examples include
The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .
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Several of the CPK colors refer mnemonically to colors of the pure elements or notable compound. For example, hydrogen is a colorless gas, carbon as charcoal, graphite or coke is black, sulfur powder is yellow, chlorine is a greenish gas, bromine is a dark red liquid, iodine in ether is violet, amorphous phosphorus is red, rust is dark orange-red, etc.
Once saturated with water, the gel may be regenerated by heating it to about 120 °C (248 °F) [7] [8] for 1–2 hours. [7] Some types of silica gel will "pop" when exposed to enough water. This is caused by breakage of the silica spheres when contacting the water. [16] Regenerating silica gel is important for both economic and environmental ...