Discoveries in Chemistry and Their Impacts on Public Life

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  • Topic: Battery, Zinc, Zinc-carbon battery
  • Pages : 5 (1269 words )
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  • Published : August 6, 2011
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DISCOVERIES IN CHEMISTRY AND THEIR IMPACTS ON PUBLIC LIFE

INTRODUCTION
Every single day, without even realising it, we use so many things that are brought to us by the discoveries and advances in chemistry. Many of these things we take for granted, and don't even bother to question how it got there, why it is there, and how it works. Chemistry makes up everything in our lives, from the air that we breathe, to the plastic on the keyboard I'm typing on now, and a in depth study of some of the wonderful things chemistry has do for the modern day world, will help us to appreciate everything we have a great deal more. For as long as we know, scientists have been creating, and improving new strategies to improve the lives of humans.

INVENTION OF BATTERIES:

One of the most important inventions was that of portable electricity. Yes, batteries. The same thing that we put into our CD player, in our remote control, in our wireless mouse, in our car and the list goes on. Batteries are one of the most widely used forms of electrical energy, and it's hard to believe that the first battery ever created was way back in 1800. Alessandro Volta was the inventor of the first ever battery, which consisted of layers of zinc, blotting paper soaked in salt water, and silver. In the 1800's, the Daniel cell was developed, which is also known as the ‘wet' cell, as it used liquids for the electrolytes. It consists of copper and zinc plates, and copper and zinc sulphates. Although the Daniel cell worked, it was only suitable for stationary items, such as door bells as it was a wet cell. From this, modern day scientists have developed a range of different cells to cater to our specific needs. There is the zinc carbon battery, which is relatively inexpensive is very commonly used as AA, C and D cells. Then there is the more powerful alkaline battery, and the lithium photo battery, which is able to supply power surges.

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OTHER IMPORTANT INVENTIONS AND ITS IMPACT
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CHLORINE
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Discovered in 1774 by carl Wilhelm Scheele , who insisted that it was in fact an element. This element is a part of the halogen series forming salts. -------------------------------------------------

Applications:
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Chlorine is an important chemical in water purification,in disinfectants,in bleach and mustard gas. -------------------------------------------------
It is also involved in bleaching wooden pulp for paper making,bleach is also used industrially to remove ink from recycle paper. |
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   COAL BRICKS|
FIELD: processing finely-dispersed high-moisture content coal cleaning products and coal fines with addition of inorganic binders. EFFECT: enhanced strength and water resistance of coal bricks; possibility of placing coal bricks for protracted storage. 1 dwg, 1 tbl| |

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FIELD: pulp-and- paper industry. EFFECT: reduced consumption of power and chemical products, and reduced production costs. 23 cl, 6 dwg| |
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   HIGH-PURITY INDIUM POWDER|
FIELD: production of high purity indium powder at processing zinc - indium containing intermediate products and waste materials. EFFECT: enhanced purity degree and fineness of made powder. 1 tbl, 1 ex | |

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  METHOD OF WATER SOFTENING|
FIELD: drinking and technical water softening. EFFECT: increase of productivity of the method of a water softening at low power costs and exclusion of chemical pollution of the water.| |
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  METHOD FOR PRODUCING PICTURE IN POLYMERIC FILMS AND APPLICATION OF THESE METHODS| FIELD: optoelectronic displays using painted electrodes. EFFECT: facilitated procedure; reduced cost. 26 cl, 3 dwg, 7 ex| |

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  DEVICE FOR INCREASING OF COOLANT HEAT CONDUCTIVITY|
FIELD: mechanical engineering equipment, particularly tool cooling system or...
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