Essay Database

… investigated. Introduction The variables I could look at are: ·The input of a catalyst. ·The concentration of the hydrochloric acid. ·The amount of magnesium. ·Temperature of the acid. Aim I'm going to look at the concentration of…

… water sources provide polluted water that is visually unacceptable for human consumption (Vigneswaran, 1). The physical properties of water, such as odor and the presence of solids, can affect the treatment of water by altering the chemical effects…

… light gray ductile metallic element that resembles tantalum chemically, and proves to be an extremely essential yet fascinating transition element. With an atomic number of 41, niobium combines strength, a high melting point, resistance to chemical…

… surpassed by his discovery of the occurrence of natural radioactivity. Becquerel decided to investigate whether there was any connection between X-rays and naturally occurring phosphorescence, after his discussion with Henri Poincaré on the radiation…

… and all the salts of the alkali metals are soluble in water, and many of the hydroxides and salts of the alkaline earth metals have very small solubilities. Weak electrolytes are salts with relatively low solubility in water. When we use the…

… to find out what factors affect the rate of electrolysis of a solution containing copper (II) ions. Plan It is known that by passing a constant electric current through a copper sulphate solution the passage of ions through this solution…

… more food was required to feed Europe and North America's growing population. "¯The addition of nitrogen based fertilizer (NaNO3(s), NH3NO3(s)) increased crop yield. "¯Soon, there was a high demand for the fertilizer itself. "¯In 1909, the German…

… that affect the central nervous system. It is also known as 1-methyl-2-phenethylamine, 1-phenyl-2-aminopropane, and Benzedrine. It is made up of a 50/50 mixture of the l and d isomers. The l isomer affects the body, and the d isomer affects…

… can be defined as " the condition in which the body's internal environment remains constant, within physiological limits". Homeostasis is a dynamic condition as the body's equilibrium point can change over a narrow range that is compatible with…

… as a compound with other elements. There are many uses of cadmium, such as batteries, cigarette smoke, pigments, metal coatings, plastics, and appears a lot in industrial waste. The consequences of using cadmium are quite dangerous when it comes to…