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    Francis HD

    Student at King'ongo Secondary School in Kimara at King'ongo Secondary School in Kimara

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    Francis HD 12 months ago

    Commented on Sky@ Music's Post in Chemistry Discussions

    Sky@ Music Posted 1 year ago

    Discussion posted in Chemistry Discussions

    Introduction To Chemistry

    1.Define the term chemistry. (2mks)

    2.a) Give 5 laboratory safety rules. (5mks)

    b)Explain why experiments in chemistry are not generally done in the open. (2mks)

    3.a) Give the definition of a apparatus as used in chemistry. (2mks)

    b) Explain why apparatus used in chemistry are made of glass. (3mks)

    4.A Bunsen burner is used for heating in the laboratory. It produces two flames luminous and non-luminous types of flames.
    a)State five differences between luminous and non-luminous flames. (5mks)

    b)Explain why a non-luminous flame is preferred for heating. (2mks)



    1. 5.Give the three categories of matter. (3mks) 

      6.Define the following terms.
      a)Element (2mks)

      b)Compound (2mks)

      c)Mixture (2mks)

      7.Draw and give the use of the following apparatus.
      a)Beaker (2mks)

      b)Test – tube (2mks)

      c)Burette (2mks)

      8.a) Give and explain the three types of mixtures. (6mks)

      b ) Give the appropriate method for separating the following mixtures.
      I.A mixture of iron and sulphur. (1mk) 
      II.A mixture of water and sand. (1mk)
      III.A mixture of kerosene and water. (1mk)

      a)Sublimation is one of the methods used to separate mixtures.
      I.What is sublimation? (2mks)
      II.Give three substances that undergo sublimation. (3mks)
      III.Name other 5 methods used to separate mixtures. (5mks)

      9.Give the symbols for the following elements.
      a)Carbon (1mk)

      b)Magnesium (1mk)

      c)Potassium (1mk)

      d)Oxygen (1mk)

      10.Identify the elements in the following compounds.
      a)Calcium carbonate (3mks)

      b)Potassium chloride (2mks)

      11.Define the following terms.
      a)Miscible liquids (2mks)

      b)Immiscible liquids (2mks)

      12.Give one apparatus for measuring volume in the laboratory. (1mk) 

    "have a nice examination by keiton charles"

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    Francis HDPhoto
    Francis HD Posted on 12 months ago

    Chemistry is the branch of science which deals the study of composition and Decomposition properties of matters

     

     

    Laboratory rules

     

    1. Don't enter in the laboratory without permission
    2. Don't Drink or eat something in laboratory
    3. Always tap off gas and water after use
    4. Don't make noise in that laboratory
    5. Don't touch anything in the laboratory without permission

    Francis HD
    Updated 1 year ago

    Changed his cover photo

    Francis HD
    Updated 1 year ago

    Changed his profile picture

    Francis HD 1 year ago

    Commented on Justina Poul's Post in Physics Discussions

    Justina Poul Posted 1 year ago

    Discussion posted in Physics Discussions

    Applications of Vectors

    Is acceleration a vector or scalar guantity

     

     

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    Francis HDPhoto
    Francis HD Posted on 1 year ago

    Acceleration is vector

    Francis HD
    Updated 1 year ago

    Changed his profile picture

    Francis HD 1 year ago

    Commented on Noreen Novin's Post in Entertainment Discussions

    Noreen Novin Posted 1 year ago

    Discussion posted in Entertainment Discussions

    Lee

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    Francis HDPhoto
    Francis HD Posted on 1 year ago

    Hahahah

    Francis HD 2 years ago

    Commented on Neema Mathias's Post in Chemistry Discussions

    Neema Mathias Posted 2 years ago

    Discussion posted in Chemistry Discussions

    Chemistry practicals

    Hey guys help on the possible chemistry practicals about titration and vulmetric analysis

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    Francis HDPhoto
    Francis HD Posted on 2 years ago

    Very simple @Neeema mathias

    Francis HD   Posted 2 years ago

    Discussion Posted in Sports and Games Discussions

    Longtime Hii sanaaaa
    Thank more @shule Direct
    #Throw Back Sunday....!

      0       9
    Francis HD   Posted 2 years ago

    Discussion Posted in Life Skills Discussions

    Longtime Sana Hii kutoka @shule Direct
    Thank more....!
    #Throw Back Sunday

      0       2
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