By: Robert D. Twitchell
A constellation is a grouping of fixed stars that appear to form a picture in the night sky. There are hundreds of constellations in both the northern hemisphere and the southern hemisphere and each one of them is a picture imagined by somebody in the...
By: Larry Stringer
The Moon has been the subject of many myths and legends concerning everything from Werewolves, and Vampires to the reasons why people seem to go nuts during a full Moon. In addition to this the Moon has most assuredly been the cause of many romantic...
By: Andrew Fink
While every element on the periodic table has a unique atomic structure, similarities in these structures yield elements with similar attributes. Most of these attributes are linked to the atomic orbital formation within them. In this introduction, I'm going to be working left to right...
By: Clint Rogers
Metals are located on the left and middle sections of the periodic table. Group IA and IIA are the alkali metals and are the most active, while the transition elements found in Groups IB to VIIIB are less active, but also considered metals. Except for...
By: Ranjana Banerjee
The Chemistry of Water Water is an essential element of life, it makes up over two thirds of our own body mass. This colorless, odorless, amorphous liquid is the most precious resource of our planet and the only natural compound that can exist in three...
By: Tony Sakalauskas
On March 26, 1859, a French medical doctor and amateur astronomer named Lescarbault claimed to have observed a planet closer to the sun than Mercury. He called it Vulcan, after the Roman god of fire. He calculated the planet's movements and sent the information onto...
By: Heather Lyon
Water is essential to life. Water's chemistry is unique and essential to life functioning the way it does. If water did not have the chemical properties it has, then life as we know it would not exist. At first glance, water's chemistry seems relatively simple...
By: Nancy Houser
When the first images from the Mars Orbiter Camera, part of the Mars Global Surveyor Mission, were viewed by scientists they were impressed by the deep gullies cutting into the Martian surface and began to theorize as to the conditions that had formed them. The...
By: Victoria Sethunya
How to Calculate the Concentration of a Chemical SolutionWays to calculate a concentration of a chemical solution depend on the purpose for which the the calculation is necessary. As an example, a chemist might be interested in knowing a specie concentration while a pharmacy technician...
By: Svetlana Elizabeth
There are different methods of making invisible ink. Obviously, which method you will use depends on the purpose of the invisible ink will it be used by children playing games or by secret agents? As secret agents are unlikely to be reading my Helium article...

 

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