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Heavy metals - Wikipedia, the free encyclopedia
There is no widely agreed criterion-based definition of a heavy metal. Different meanings may be attached to the term, depending on the context.
https://en.wikipedia.org/wiki/Heavy_metal_(chemical_element)

Precipitate - definition of precipitate by The Free Dictionary
Left by their guide, the travelers remained a few minutes in helpless ignorance, afraid even to move along the broken rocks, lest a false step should precipitate them ...
http://www.thefreedictionary.com/precipitate

Metal - Wikipedia, the free encyclopedia
A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard, opaque, shiny, and has ...
https://en.wikipedia.org/wiki/Metal

Rader's CHEM4KIDS.COM - Chemistry basics for everyone!
Chem4Kids.com! The site that teaches the basics of chemistry to everyone! Tutorials on matter, atoms, elements, the periodic table, reactions, and biochemistry.
http://chem4kids.com/

Precipitation - definition of precipitation by The Free ...
Cora, already regretting her precipitation, was obliged to comply, for Magua instantly left the spot, and approached his gluttonous comrades.
http://www.thefreedictionary.com/precipitation

Cosmetic Chemistry - Chemistry Encyclopedia - structure ...
Skin-care emulsifiers can be divided into two groups based on ionic charge (See Figure 3). Materials that can dissociate into charged species are considered ...
http://www.chemistryexplained.com/Co-Di/Cosmetic-Chemistry.html

chemical reaction | Definition, Equations, Examples ...
A process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or ...
https://www.britannica.com/science/chemical-reaction

Chemistry - 101 Science
Learn more about Chemistry Electronics, Biology, Microscopy (Microscope), Amateur Radio, Photography, Radio Astronomy, Science, Home Learning and much more. www ...
http://www.101science.com/Chemistry.htm

Periodic Table of Elements and Chemistry
Award winning periodic table, with user-friendly element data and facts. Cool, online chemistry videos, dictionary, tools and forum.
http://www.chemicool.com/

WebElements Periodic Table of the Elements
Interactive periodic table. Clicking on an element brings up a list of general properties and data, and information on its discovery, history, uses, geologic ...
http://webelements.com/

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