Essay Database

… Drew Selfridge Dave Allen, Lab partner Instructor Yang February 11, 1997 INTRODUCTION This experiment was to recover the most amount of copper after it is subjected to a sequence of reactions.…

… 1997 March 19 Photochemical Smog Historically, the term smog referred to a mixture of smoke and fog, hence the name smog. The industrial revolution has been the central cause for the increase in pollutants in the atmosphere over the last…

…         Rutherford started his scientific career with much success in local schools leading to a scholarship to Nelson College. After achieving more academic honors at Nelson College, Rutherford moved on to Cambridge University's Cavendish laborator…

… of the elements. It has a mass of roughly 131 atomic mass units. There are 77 neutrons and 54 protons in the nucleus of the atom. The symbol for xenon is Xe and it belongs to the family of elements called the noble gases. It is called a noble…

… I utilize various laboratory procedures that every organic chemistry student should be familiar with he really liked this one alot 17. October 1996 Experiment #7 Acetylation of Ferrocene Introduction         In this lab we will be utilizing…

… react with several different things. Some metals react with oxygen, some with water, some with hydrochloric acid, and several other things. Also, some elements react more readily than others, and they react at different speeds. Many metals are good…

… They react to make sulphar, which if inhaled, can be harmfal. When te experiemtn takes place get rid of the mixture as soon as it goes cloudy. A cross must be drawn and the conical flask put on top. The higher the concentration of thiosulphate…

… and is one of the most important chemical elements. The hydrogen atom is simple and the smallest atom. Hydrogen consists of 1 proton, which has a positive charge, and 1 electron, which has a negative charge as well. Hydrogen has a chemical symbol H.…

… Why? Because there are no free molecules. Examples of convection 1.Domestic hot water system Cold water in the tanks is heated by electric element at the bottom. The hot water molecule at the bottom raises up and the cold upper molecules sinks to…

… because when going down the group the number of shells around the atomic radius increases and the outer electrons become weakly attracted by the nucleus. As you go to the rite the no. Of neutrons in the nucleus (+) charged particles increases.…