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    Posted 5 days ago in Form 1

    Laboratory Techniques And Safety

    what is uses of beaker

      0       2

    Comments  


    Fankie Peace   Posted on 3 days ago

    correct 

    https://s04.flagcounter.com/mini/rzN/bg_FFFFFF/txt_DDDDDD/border_FFFFFF/flags_0/.png

    Kemy Magayane   Posted on 6 days ago

    It's mostly used for mixing liquids in the laboratory

    Posted 2 weeks ago in Form 1

    Introduction To Chemistry

    what is matter?

      1       2

    Comments  


    Kemy Magayane   Posted on 6 days ago

    Matter has weight and not mass

    Grace MACHOTA   Posted on 1 week ago

    Is anything that occupy space and has mass

    Posted 2 weeks ago in Form 1

    Introduction To Chemistry

    WHY CHEMISTRY IS SOMETIMES KNOWN AS CENTRAL SCIENCE

      0       1

    Comments  


    Jack Grifo   Posted on 2 weeks ago

    because it links all other science subjects.

    Posted 2 weeks ago in Form 1

    Matter

    CHANGES OF MATTER FROM SOLID TO GASEOUS IS KNOWN AS

      0       1

    Comments  


    Simeon Mwakyusa   Posted on 2 weeks ago

    Sublimation

    Posted 3 weeks ago in Form 1

    Introduction To Chemistry

    what is chemistry

      1       4

    Comments  


    Grace MACHOTA   Posted on 1 week ago

    is the branch of science which deals composition ,structure and properties of matter

    Jack Grifo   Posted on 2 weeks ago

    Is the blanch of science which is the study of structure,properties,and changes of matter.

    Macy Lee   Posted on 2 weeks ago

    Is the branch of science................................

    OBEID MAHELA   Posted on 2 weeks ago

    IS STUDY OF STRUCTURE,PROPERTIES AND CHANGES OF MATTER

    Posted 4 weeks ago in Form 2

    Water

    Why is water said to be a universal solvent?

      0       5

    Comments  


    Gideon Nasary   Posted on 1 week ago

    water is said to be a universal solvent because it is capable of dissolving variety of substance in the universe

    Simeon Mwakyusa   Posted on 2 weeks ago

    Because it dissolves many solute

    Princillah Junais   Posted on 2 weeks ago

    because anything you do without water you can die

    Jacobin Celestine   Posted on 4 weeks ago

    jamba cheche

    Posted 4 weeks ago in Form 2

    Water

    what is oxygen guys?

      0       1

    Comments  


    OBEID MAHELA   Posted on 2 weeks ago

    OXYGEN IS ONE OF THE MANY GASES IN THE ATMOSPHERE IN WHICH MOST LIVING THINGS INHALE TO CREATE ENERGY IN THEIR BODIES

    Posted 4 weeks 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"

    Show more
      3       10

    Comments  


    Grace MACHOTA   Posted on 1 week ago

    vitu v

    Jack Grifo   Posted on 2 weeks 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 3 weeks 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 3 weeks ago

    i had a quesition who is a cooker

    Posted 1 month ago in Form 1

    Introduction To Chemistry

    what is co2 

    https://s04.flagcounter.com/mini/rzN/bg_FFFFFF/txt_DDDDDD/border_FFFFFF/flags_0/.png

      0       6

    Comments  


    Grace MACHOTA   Posted on 1 week ago

    is acarbondioxide

    Jack Grifo   Posted on 2 weeks ago

    carborndioxide.

    JACE NORMAN   Posted on 3 weeks ago

    carborndioxide.

    Vivian Touoi   Posted on 1 month ago

    is a carborndioxide

    Posted 1 month ago in Form 1

    Introduction To Chemistry

    help plz 

    https://s04.flagcounter.com/mini/rzN/bg_FFFFFF/txt_DDDDDD/border_FFFFFF/flags_0/.png

      0       3

    Comments  


    Jack Grifo   Posted on 2 weeks ago

    dont care.

    Vivian Touoi   Posted on 1 month ago

    hujui vitu kama hivyo dont care soma sana

    Posted 1 month ago in Form 1

    Chemistry

    Nasra hassan tukutane baadae nikufundishe

      1       1

    Comments  


    Mansourinho JR   Posted on 2 weeks ago

    sawa mama

    Posted 2 months ago in Form 2

    Formula Bonding and Nomenclature

    Define the following terms:

     

    1. vaiable valency
    2. valency
    3. oxidation state

      2       0

    Comments  


    Posted 2 months ago in Form 3

    Extractions Of Metals

    show that metals are extracted differently due to their reactivity

      2       0

    Comments  


    Posted 2 months ago in Form 1

    Matter

    Types of matter

      1       1

    Comments  


    Vivian Touoi   Posted on 1 month ago

    that is not your name

    Posted 2 months ago in Form 3

    Volumetric Analysis

    calculate  ppercentage purity of acid and base 

      1       1

    Comments  


    Baraka John   Posted on 1 month ago

    percentage purity of acid and base = concetration of pure/concetration of impure times 100%

    Posted 2 months ago in Form 1

    Matter

    what is matter

      4       7

    Comments  


    Nasra Hassan   Posted on 1 month ago

    hi

    Hans Ibrahim   Posted on 1 month ago

    Matter is made up of tiny particles,what are they?

    Farouk Hussein   Posted on 2 months ago

    matter is anything that has mass and occupies space

    Nasra Hassan   Posted on 2 months ago

    i want  someone to teach me survey

    Posted 2 months ago in Form 1

    Heat Sources And Flames

    what is flame?

      0       3

    Comments  


    Jose Tine   Posted on 4 weeks ago

    kasome!!!!!!!!!!!!!

    Lee Seung Gi   Posted on 1 month ago

    is a zone of burning gases that produces heat and light

    Clara Dickson   Posted on 2 months ago

    Is the burning of gases that give out Hart and light

    Posted 2 months ago in Form 4

    Non Metals And Their Compounds

    I bought 3 liters of kerosene and also I bought ONE AND HALF liters of petroleum,then mixed in the bottle of five liters sized.what is the product of that mixture?? and what are the uses of the mixture obtained???

     

      1       0

    Comments  


    Posted 2 months ago in Form 2
      1       1

    Comments  


    Simeon Mwakyusa   Posted on 2 weeks ago

    Lithium,Berylium

    Posted 2 months ago in Form 2
      1       1

    Comments  


    Maria Katyetye   Posted on 2 months ago

    is the ability of atom to gain eletrons

    Ask
    Ticha
    Kidevu