Physics, let alone all the sciences put together, covers such a vast range of knowledge that it's useful to identify a small number of "big ideas" that link across a greater number of concepts. And energy is undoubtedly the biggest of these "big ideas". When it comes to revising energy, the breadth of its impact … Continue reading Energy: the biggest “big idea”
Element Names
People often ask why chemical elements are represented by the symbols they have been given. Some are obvious; H, C, N and O could only really be hydrogen, carbon, nitrogen and oxygen. Similarly, Zn is fairly obvious as zinc, Ar is clearly argon and Es makes sense as Einsteinium (once you know that name exists). … Continue reading Element Names
Energy Stores and Transfers
Energy is the property of a system that enables it to do work. This is often stated bluntly as; “energy makes thing work”. There is a fundamental law in physics, which states that the total amount of energy in a system always remains constant. Energy cannot be created and it cannot be destroyed. Energy can, … Continue reading Energy Stores and Transfers
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