Physical Science

The Noble Gas neon is one of the most inert elements known. Finding interesting facts about an element that does not do very much is difficult but I’ll try. Starting with the elements basic properties, its atomic weight is 20.1797…
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One thing that most kids agree on is the fact that they find anything that looks and feels gross, yucky, or disgusting, appealing. While most adults find it less than attractive, kids especially like slime, and they like to make…
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Gold: Royalty among the Elements Gold has been known since prehistoric times, and is mined on all continents except Antarctica. It has been highly valued and treasured ever since its prehistoric discovery. Because of its relative rarity (it is the…
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Chlorine, a gaseous halogen has atomic number 17 and belongs in group 17, period 3 and the p-block of the periodic table. Needing only one electron to fill its outer electron shell, chlorine readily forms compounds with most other elements….
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All molecules experience intermolecular attractions because molecules attract each other at moderate distances and repel each other at close range. The attractive forces are collectively called “Van der Waals forces” and include all forces that act between electrically neutral molecules…
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Growing a homemade crystal is a fun, simple science project that just about anybody can do! It requires some simple materials that are usually found at home, some patience, and a few days. The first step is to assemble the…
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The mass spectrometer is one of the most versatile instruments available to the analytical chemist. It can analyze samples that are gases, liquids, or solids. It is used to analyze individual atoms or complex biopolymers. When coupled with chromatography, which…
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Aside from the Sun, the Moon is probably the most spectacular site in space that we can see with the naked eye. Earth’s Moon has attracted our interest for thousands of years, to the point where people have explored its…
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If a trained technician uses a home pregnancy test, it has an accuracy rate of 97%. If an untrained woman uses one, the accuracy is much less. Why the difference? The technician is trained in precision and procedures, but, more…
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The Sun – Center of the Solar System You may remember going outside on a hot summer night, laying down on the grass, and looking up to gaze at the numerous stars that speckle the night sky. Because these stars…
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