Essay Database

… Curie(1867-1934) was a French physicist with many accomplishments in both physics and chemistry. Marie and her husband Pierre, who was also a French physicist, are both famous for their work in radioactivity.         Marie Curie, originally…

…         Phosphates may be created by substituting some or all of the hydrogen of a phosphoric acid by metals. Depending on the number of hydrogen atoms that are replaced, the resulting compound is described as a primary, secondary…

… a chemical reaction: Calcium Carbonate + Hydrochloric Acid Calcium Chloride + Carbon Dioxide The easiest way to determine a change in the reaction is how much carbon dioxide is given off during the reaction. The variables that affect this…

… on Chemistry by Isaac Asimov is a collection of seventeen essays that he wrote for The Magazine of Fantasy and Science Fiction. This book is one of ten that were published by Doubleday & Company, Inc. Not all of the books centered on chemistry…

…         PLÁSTICOSMEDICINASPERFUMESTELASDETERGENTES EL PETRÓLEO                           COMPOSICIÓN QUÍMICA         MEZCLA DE HIDROCARBUROS, ALCANOS, ALQUENOS, NAFTENOS Y AROMÁTICOS El petróleo es un líquido oleoso,…

… of this experiment is to find out how crystals are formed and how they are classified. For a long time, I've been interested in crystals, so I've decided this experiment would be perfect for me! Crystallography         The study of the…

… THE ELEMENTS · There are 92 naturally occurring elements, only 17 of them make up 99.5% of the earth's crust (including oceans and atmosphere). · In living things (plants, animals, people) the six most abundant elements are carbon, hydrogen, oxygen,…

… oxygen, O3, is most commonly known as ozone. It has a resonance structure, and can be drawn in two different ways:                  O=O-                                                      …

… short Becoming a chemist takes a lot of hard work and discipline. One very importan aspect of being a chemist is English, Comunication is of the utter most importance (Murphy). As well as having good communication skills, you also need a lot of…

… INFORMATION What affects the rate of reaction? 1) The surface area of the magnesium. 2) The temperature of the reaction. 3) Concentration of the hydrochloric acid. 4) Presence of a catalyst. In the experiment we use hydrochloric acid…