Chemistry

Every moment of every day, chemistry plays a part in all we experience. This branch of the Helium network humbly attempts to illuminate the vast array of chemical knowledge, making it accessible to all. Let our site inform, inspire, and awe you with chemical wonders.
By: Tarek Musslimani
Transition metals are those elements in the periodic table with incompletely filled d shells with electrons. Transition metals start in the left with the scandium group which has the 4s2-3d1 electronic configuration, and ends in the right with the zinc group which has the...
Subtleties of perfume chemistry
By: Christine Zibas
Everyone's had the experience of the woman with too much perfume standing next to us, on an elevator, in the office, in a restaurant, or elsewhere. Why does she do it? Can't she smell that overpowering scent that seems to linger even after she's left...
By: William Menna
Copper is a reddish brown element in the transition metals family of the periodic table. Copper is in the fourth period and eleventh group of the periodic table. It has an atomic number of 29 and an atomic weight of 63.546. The chemical...
By: Glen Brizius
Both fluorescence and phosphorescence are extremely beautiful chemical phenomena that practically everyone has experienced at one point or another. Explaining their origins (which in turn will explain the difference between the two) gets a bit technical, but if you can sufficiently break down a complex...
Science projects you can do at home
By: Jennifer Kirkman
There are several types of biology books for kids. But some of these are much better than others. Here goes some suggestions for parents. Monarch Magic! Butterfly Activities & Nature Discoveries by Lynn Rosenblatt is excellent for children that are between the ages of...
How to grow crystals for a science fair project
By: Colleen Mart
Some of the largest natural crystals ever found are in the Cueva de los Cristales (Cave of Crystals) in Mexico. Some of these fabulous crystals are 36 feet long and can weigh as much as 55 tons. Formed from gypsum, they are transparent and glitter...
By: William Menna
Zinc is a metallic element which has been used by humans for millennia. Zinc's chemical symbol is Zn and its atomic number is 30. It belongs to the fourth period and twelfth group of the periodic table of elements. In its natural form, zinc is...
By: Phyllis Logie
Chocolate has been around for over 3000 years. Native to South America it was once used as currency by the natives and in the West it used to be viewed as a luxury commodity and only enjoyed by the wealthy. In Europe today it...
By: Nan C Avery
Winning Chemistry project science fair projects is at three different grade levels. Although this paper seems long, it is broken into grade levels. One experiment for elementary school 3- 5; one for middle school 5-8; and one for high school 10-12. So you can...
How to grow crystals for a science fair project
By: Amanda Mittra
The art of growing crystals for a science fair project is simple, fun and rewarding. The outcome is generally a dazzling display of white crystalline structures or a beautiful array of crystals in color. A crystal, to begin with, is an orderly arrangement of...

 

1 72 73 74 75 76 130
CHOOSE YOUR SCIENCES 360 TOPIC: