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Chemistry - Elements, Terminologies and More (Examville)

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Chemistry - Elements, Terminologies and More (Examville) Powered By Docstoc
					Introduction To Chemistry
CHEMISTRY

      ELEMENT,
     COMPOUND
        AND
      MIXTURE
What is an element ?
          Element
          A chemical substance
           Simplest substance
          Cannot be decomposed
         to a simpler substance

          Built up from one type
         of atoms only
                      ELEMENT


            Metal                         Non-Metal


   (l)         (s)                  (g)     (l)           (s)

(g) – gas            (l) – liquid           (s) - solid
Examples of Metals

           ( Sodium )
               Na

               Use :
           Sodium Lamp
      Copper Cu
Use : Electric Conductor
           Calcium Ca
Use : Calcium ions needed to form bones
                and teeth
        Aluminium Al
Use: Making of cooking pots and pans
Gold ; Aurum Au
  Use : Jewelry
     Iron; Ferum Fe
Use : Construction of buildings
         and bridges
   Lead Pb
Uses : Water pipes
 Pipes for wiring
     Magnesium Mg
Use : Crackers and Fireworks
Platinum Pt
 Use: Jewelry
   Potassium K
Use :    Potassium salts
        - agricultural fertilizers
Silver Ag
Use : Jewelry
       Tin Sn
Use : Making containers
   Zinc Zn
 Uses : Dry cells;
Roofing for houses
   Mercury Hg
Use : In Thermometers
Examples of Non-Metals




       Chlorine Cl
Use : Killing germs in water
            supply
    Argon Ar
Use : Lighting Bulbs
 Bromine Br
Use : Photography
     Boron B
   Use : Making
Medicine in pharmacy
   Helium He
Use : Filling balloons
    Carbon C
Diamond & Graphite
Hydrogen H
 Use: Fuel
  Iodine I
Use : Antiseptic
   Neon Ne
Use : Neon Lights
    Nitrogen N
Use : Liquid Nitrogen –
 Refrigeration Coolant
     Oxygen O
Use : Gas for Breathing
Phosphorus P
Use : Matches
   Silicon Si
Use : Computer CPU
    Sulphur S
Use : Manufacture of
   Sulphuric Acid
What is a Compound ?
    A Chemical
    Consists of 2 or
    more elements
    chemically combined
    Chemical Bond
    between the particles
Examples of Compounds




   Ammonium Chloride
      Use : Dry Batteries
  Constituents : H , N , Cl
       Glucose




 Use : Carbohydrates
Constituents : H , C , O
  Sodium Chloride




Use : Flavor for Food
Constituents : Na , Cl
 Calcium carbonate




Use : Building material
Constituents : Ca , C, O
    Sulphuric acid




Use : Car Accumulator
Constituents : H , S , O
           Urea




Use : Nitrogeneous Fetilizer
Constituents : C , H , O , N
  Copper (II) sulphate




      Use: Fungicide
Constituents : Cu , S , O , H
     Potassium nitrate




Use : Agricultural Fertilizers
  Constituents : K , N , O
    Ethanoic acid




    Use : Vinegar
Constituents : C , H , O
Trichloromethane (Chloroform)




      Use : Anaesthetic
      Cost : C , H , Cl
What is a Mixture ?
       Substance consisting of 2
        or more substances
        physically combined
        together
       Components : Elements
        or/and compounds
       Components can be
        separated by physical
        means
Examples of Mixtures
        Air– Oxygen, Nitrogen,
        Carbon dioxide, water
              vapor etc
           Soil




Constituents : Humus, sand,
  air, water, minerals etc.
             Milk




 Components : Lactose, water,
proteins, vitamins, minerals etc

				
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Description: Some basic information on a variety of subjects related to chemistry provided for free by Examville