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    Posted 2 years ago in Form 1

    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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    Comments  

    Rith Msuya   Posted on 2 years ago

    Laboratory rules

    1
    1.Don't enter in the laboratory without permission
    2.Don't make noise in the laboratory
    3.Don't drink anything in the laboratory
    4.Don't touch anything without instruction
    5.Report all accident occur in the laboratory

    Laurentmnanka Masero   Posted on 2 years 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.

    Grace MACHOTA   Posted on 2 years ago

    vitu v

    Jack Grifo   Posted on 2 years 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

    JACE NORMAN   Posted on 2 years 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

    Princillah Junais   Posted on 2 years ago

    i had a quesition who is a cooker

    Princillah Junais   Posted on 2 years ago

    our form 1 mates mpo poa

    Princillah Junais   Posted on 2 years ago

    hellow is the branch of science deals with all composition of properties of matter

    Francis HD   Posted on 2 years 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

    Joyce Yesse   Posted on 2 years ago

    do not eat or drink in the laboratory

    Joyce Yesse   Posted on 2 years ago

    answer qn 2b cjaelewa

    Joyce Yesse   Posted on 2 years ago

    is the branch of science which deals with composition and all properties of matter

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