Physical Science

Why we have the periodic table: In the early nineteenth century, John Dalton would add his own two cents worth to a debate that had continued since the time of Aristotle and Democritus. The question being: What is all the…
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There are hazards associated with any chemical reaction, though some receive more attention than others.  Danger is clearly associated with fires and explosions, which are produced by exothermic reactions that can release tremendous amounts of energy.  Still, even endothermic reactions,…
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Every minute of every day in our physical universe, chemicals react with one another.  Some of these are beneficial to humanity and save lives, while others have the potential to destroy entire empires and civilizations.  A chemical reaction is a…
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Whether you are preparing for Halloween, playing a vampire in a local stage production or are about to attend a horror dress up party, you might look a lot scarier if you add some fake blood to our outfit. You…
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Most people generally know about the precious metal silver through rings, necklaces and other pieces of jewelry and this is one of the common uses of the metal. However it can be also be utilized for many other purposes and…
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Quality assurance encompasses four stages of laboratory analyses: patient identification, patient and sample preparation, testing or assaying and reporting or recording of results. Quality control specifically used in the third stage of quality assurance testing, is a valuable tool in…
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We have all been there.  Preparing a special salad, or an apple pie, wanting everything to be perfect for our family and guests.  Then, before the blink of an eye, the pristine juicy cut surfaces of the fruit begin to…
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Argon, a colorless and odorless gas, makes up 0.93% of our planet’s atmosphere. This makes it the third most abundant element in our atmosphere after nitrogen and oxygen. Martian atmosphere is richer in this element containing 1.6 % argon. It…
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Due to its atomic structure as well as chemical and physical properties, carbon is a very unique non metallic element in nature. It has an atomic number of 6; atomic weight of 12.01 and a melting point of 360ºC. As…
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Man has been using silver for a longtime. Archeologists have found evidence of its usage dating back 5,000 years. Its name comes from the Anglo-Saxon name for the element “seolfor”, while its symbol (Ag) comes from its Latin name “argentum”….
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