Physical Science

I have a friend whose house is, reportedly, haunted. Some people will agree. She has stories of the usual sort: TVs turning on of their own accord, hearing doors slam when the house is empty, hearing faint voices. She talks…
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By far the most common mistake over the last hundred years in the teaching of the history of science and the evolution of scientific ideas frequently also made in the teaching of the processes of biological evolution is to falsely…
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Technetium Symbol: Tc Atomic Number: 43 Atomic Mass: 98.0 amu (atomic mass units) Melting Point: 2200.0°C (2473.15 K, 3992.0°F) Boiling Point: 4877.0°C (5150.15 K, 8810.6°F) Number of Protons: 43 Number of Electrons: 43 Number of Neutrons: 55 Classification: Transition Metal…
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Since the discovery of the neutron in the 1930’s, the neutron has held a fascinating place in chemical theory. One of the first things that was decided was that the neutron’s existence explained the Periodic Chart of the Elements. “The…
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Carbon is known as the fundamental building block of life. It possesses the ability to bond with nearly every element, and it can bond with itself in a wide variety of ways. It is the fourth most abundant element by…
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The atom was first discovered in the early 1800’s by John Dalton, who acknowledged the “Atomic Theory of Matter”, and the “Law of Multiple Proportions”, and created the “Table of Atomic Masses”. Atoms have been constantly looked at by scientists…
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Helium 4 has two liquid forms. Helium I, which is a “normal liquid,” and Helium II, “He4II,” to which it sharply converts at 2.174K. This strange material expands on cooling, has tremendous heat conductivity, a strange viscosity that it will…
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Fireworks, like potato chips and many other things we enjoy today, are legend to have been originally created by accident. The legend starts in China with a cook who was working in a test kitchen. He mixed charcoal, sulphur and…
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Actinium Symbol: Ac Atomic Number: 89 Atomic Mass: 227.0 amu (atomic mass units) Melting Point: 1050.0 C (1323.15 K, 1922.0 F) Boiling Point: 3200.0 C (3473.15 K, 5792.0 F) Number of Protons: 89 Number of Electrons: 89 Number of Neutrons:…
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Helium(He) is a chemical element under the group of noble gases, inert gases, of the periodic table. With atomic number 2 and atomic weight of 4.002602, helium is the second lightest element and the second most abundant element in the…
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