ChemEd DL Application: Periodic Table Live! Periodic Table Live! allows you to explore a broad range of information about the elements, their reactions, their properties, their structures, and their histories. Required Components How to Memorize Verbatim Text If you are visiting from StumbleUpon and like this article and tool, please consider giving it a thumbs up. Thanks! Memorizing does not have to be as hard as most people make it. The problem is that most people only know how to memorize by reading the same thing over and over again.
Titration Calculations Before you go any further, check that you can do the following… Calculate: Relative molecular masses from a given chemical formula Calculate: Number of Moles from the mass/RMM equation Manipulate: The number of moles equation to get the form you require. When you are confronted by a Titration calculation the first rule is: The Second rule is read through the question very carefully. The One Swedish Mine That Gave us Seven Chemical Elements One of the most unheralded sites of scientific discovery in history is a rock quarry on the outskirts of the small Swedish village Ytterby. The site opened in the 1700s to feed European porcelain fads, but soon reports began to circulate of strange materials coming forth from the Earth. The mine ended up being the site of discovery of seven new elements, four of which are named after the town. Tom Scott went to visit it. Advertisement - Continue Reading Below
Immune System Listen The immune system, which is made up of special cells, proteins, tissues, and organs, defends people against germs and microorganisms every day. In most cases, the immune system does a great job of keeping people healthy and preventing infections. But sometimes problems with the immune system can lead to illness and infection. Practical Chemistry.org This website is for teachers of chemistry in schools and colleges. It is a collection of experiments that demonstrate a wide range of chemical concepts and processes. Some of the experiments can be used as starting-points for investigations or for enhancement activities. Many have links to carefully selected further reading and all include information and guidance for technicians. Chemistry is a practical science.
5 Teaching Practices I'm Kicking to the Curb So many of us teach the way we were taught. We may not even realize we’re doing it. And that means certain practices get passed down year after year without question, methods that are such a normal part of the way we do school, we perpetuate them without realizing there are better alternatives. Today I’m going to roll out five of these for your consideration: five teaching practices used every day that are not backed by research. How 29 Long-Ignored Elements Could Make or Break the Clean-Energy Revolution In December 2006, William Tahil, an energy analyst, published a paper online titled "The Trouble with Lithium." His argument would be alarming to the many people who had placed their hopes for a cleaner, more prosperous economy on the rapid development of electric cars powered by lithium-ion batteries. The trouble, he proposed, was that the world didn't contain enough economically recoverable lithium to support such a switch. Moreover, the viable pockets of lithium that did exist were concentrated in just a few countries. "If the world was to swap oil for Li-Ion based battery propulsion," he wrote, "South America would become the new Middle East.
Endocrine System Listen Things That Can Go Wrong Too much or too little of any hormone can be harmful to your body. For example, if the pituitary gland produces too much growth hormone, a teen may grow excessively tall. If it produces too little, a teen may be unusually short. 10 elements crucial to modern life that you've probably never heard of We live in a complicated world. Our lives are driven by unfathomably complex systems that overlap in a cacophony of technology to deliver us our cellular service, Internet, groceries, health care, transportation, consumer goods, music, TV, movies and everything in between. One of the results of our headlong rush into a technologically augmented world is a veritable mountain of equipment.
Brain Structure And Function The brain structure is composed of three main parts: the forebrain, midbrain and hindbrain, each with multiple parts. Forebrain The Cerebrum: Also known as the cerebral cortex, the cerebrum is the largest part of the human brain, and it is associated with higher brain function such as thought and action. Nerve cells make up the gray surface, which is a little thicker than our thumb. White nerve fibers beneath the surface carry signals between nerve cells in other parts of the brain and body. Its wrinkled surface increases the surface area, and is a six-layered structure found in mammals, called the neocortex.
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