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: Ernest Capraro
Diffusion and osmosis are both equilibrium-related processes. Diffusion describes a general behavior of fluids (e.g. gases, liquids, solutions). Osmosis is a specific type of diffusion, occurring when mobility is restricted by a semi-permeable barrier. To make life easy, here's an easy visual model to...
By: Alison Bowler
The alkali metals form Group 1 of the periodic table. The six alkali metals are Lithium (Li) atomic number 3, Sodium (Na) atomic number 11, Potassium (K) atomic number 19, Rubidium (Rb) atomic number 37, Cesium (Cs) atomic number 55 and Francium (Fr) atomic number...
The history of the periodic table of elements
By: John JS Smith
The modern periodic table of the elements is a chemist's must-have for doing many of the things required by the profession. It helps them predict properties of elements such as chemical reactivity, state of matter, and electron configuration. Though this diagram seems flawless, it hasn't...
By: Jim J Jones
No matter how many times you tear apart a lego toy and rebuild it, the number of blocks you are using stays constant. This obvious, intuitive principle is the foundation for the law of conservation of mass, which dictates that no matter how how many...
By: Wayne Mcdonagh
Elements and compounds are different in many ways and for many reasons. I shall explore three ways in which they are different. But in order to understand this you must first understand the nature of an atom. For those of you who aren't obsessed with...
Understanding the periodic table of elements
By: Sherry Horton Blake
If you are not familiar with the periodic table of elements, when you first look at it, it may look like an undecipherable page of letters and numbers (actually, even if you are familiar with it, it may look like an undecipherable page of letters...
What information should go on a chemistry lab report
By: Ernest Capraro
Ultimately, the information required on a lab report is whatever your teacher, professor, lab supervisor, or research advisor expects to see, and you should always follow their guidelines. The lab report serves two purposes - it is a thorough record of what you did, and...
By: John Traveler
Whereas the physical characteristics and properties of an element are determined by the number of protons in the atoms nucleus, the isotope of an element is determined by the number of neutrons in the nucleus of the atom. All elements by default have at least...
By: John Traveler
In 1803, John Dalton fathered the science of chemistry by establishing that all matter was made up of indivisible units called atoms. From that point forward, the race was on to discover and define all the different atomic configurations and subsequent elements. As more and...
States of Matter
By: Reynold Conger
The term state when used in reference to matter is an arbitrary term. The state of mater is a classification used to separate different materials into broad categories. Chemists find it very convenient to identify a material by its state, but in reality matter tends...

 

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