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    Posted 5 months ago in Form 2

    Oxygen

    why in the laboratory we use  grass tool beside of plastic tools or iron

     

      0       22

    Comments  

    Luqman Abdi   Posted on 2 weeks ago

    we use glass tools because  it is more durable than other materials eg glass can withstand  up to 4000 degrees while iron only 1000

    Harriet Valentine   Posted on 3 weeks ago

    they are relativelly cheaper

     

    they do not react with the chemicles

    Amos Anthon   Posted on 2 months ago

    We use glass tools in the laborator because the glass tools it help to seen well the colour of chemical Example copper ii sulphate

    EDEN LAIZER   Posted on 2 months ago

    yes we do

    Posted 5 months ago in Form 1

    Introduction To Chemistry

    hi guys whatsup

      0       5

    Comments  

    Makenzie Johnson   Posted on 2 months ago

    its good we know its the best you can do











    Ciara Jol   Posted on 3 months ago

    HEY LEVY I KNOW THAT YOU ARE CLEVER THANKS BY THE WAY THOUGH I JUST WANTED TO KNOW ANY STORIES

    Brinley Pally   Posted on 4 months ago

    tupange

    Levy Omuga   Posted on 4 months ago

    Up is the stage of improvement

    Posted 5 months ago in Form 4

    Non Metals And Their Compounds

    what is malleable                                                                                         what is ductile                                                                                                what is brittle        plz help me                      

    Show more
      0       6

    Comments  

    Jonathan Felix   Posted on 4 weeks ago

    who has the most correct definition of Brittle?

    ADAM STRATEGY   Posted on 3 months ago

    MALLABLE IS THE ABILITY OF METAL TO BE PRESSURISED HAMMERED OR COMPRESSED INTO THIN SHITS LIKE LATEST VEHICLE ARMORS(PRESIDENTIAL CAR ARMOR)
    DUCTILE IS THE ABILITY OF A METAL TO BE STRETCHED/ELONGATED INTO WIRES LIKE STRUCTURE FRAME/FOUNDATION SUPPORTS PUT BEFORE APPLYING CEMENT
    BRITTLE IS THE ABILITY OF A METAL TO BE EASILY REFORMED LIKE THE THIN METAL WIRES WE SOMETIMES USE FOR HANGING OUR CLOTHES YOU CAN BEND THEM EASILY WITH YOUR OWN HANDS

    ADAM STRATEGY   Posted on 3 months ago

    BRITTLE MEANS EASILY BROKEN

    Frank Majibwene   Posted on 5 months ago

    mallable is the ability of a metal to be harmed into thin sheets
    ductile is the ability of a metal to be streched into wires
    brittle is the ability of a metal to be unbreakable

    Posted 5 months ago in Form 2

    Fuels And Energy

    what is fuel & energy

      0       5

    Comments  

    Dan Macmillan   Posted on 2 months ago

    energy is the ability to do work while fuel is substance which when heated produces heat and light

    ADAM STRATEGY   Posted on 3 months ago

    FUEL IS A SUBSTANCE THAT PRODUCES ENERGY WHEN HEATED
    AND ENERGY IS THE ABILITY TO DO WORK

    Jenepher Kibasa   Posted on 3 months ago

    Energy is the ability of a body to perform work

    Frank Majibwene   Posted on 5 months ago

    fuel is a subustance in which when heated tend to produce heat and light

    energy is the ability to do work

    Posted 5 months ago in Form 2

    Formula Bonding and Nomenclature

    What is mercury

      0       7

    Comments  

    Naima Saad   Posted on 3 weeks ago

    Mrcury is a metal in liquid form

    ADAM STRATEGY   Posted on 3 months ago

    MERCURY IS ALSO AN ADHESIVE TYPE OF ELEMENT

    Brinley Pally   Posted on 4 months ago

    is achemical element with symbol Hg and atomic number 80.

    Zahra Aljabry   Posted on 4 months ago

    mercury is a metal that contains oxygen rich compounds[im not sure tho]

    Posted 6 months ago in Form 1

    Introduction To Chemistry

    goodnight guz especially beatrice laizer,fankie peace,&all my followers

      0       2

    Comments  

    Young Coco Swam   Posted on 5 months ago

    We are fine

    Beatrice Laizer   Posted on 6 months ago

    Thanks for mentioning me,you too dear friend

    Posted 6 months ago in Form 1

    Air Combustion, Rusting And Fire Fighting

    why is air not a compound

      1       3

    Comments  

    Frank Majibwene   Posted on 5 months ago

    air isn't chemically combined but its physically combined

    Marion Mukoye   Posted on 5 months ago

    Air is a mixture and a compound because gases in it are not chemically combined and can be separated

    Beatrice Laizer   Posted on 6 months ago

    Air is a mixture and not compound because
    Gases in air can't be separated by chemical means and gases can be seen separated

    Posted 6 months ago in Form 2

    Atomic Structure

    Hi guys what is atomic structure?

      1       2

    Comments  

    ADAM STRATEGY   Posted on 3 months ago

    THE ATOMIC STRUCTURE IS THE COMBINATION OF TINY PARTICLES NAMELY ELECTRONS (-CHARGE) PROTONS(+CHARGE) AND NEUTRONS( NO CHARGE) THAT FORM UP THE ATOM ITSELF EACH HAVING DIFFERENCES FROM THEIR ELECTRONIC CONFIGURATION

    Fankie Peace   Posted on 6 months ago

    The basic structure of an atom includes a tiny, relatively massive nucleus, containing at least one proton and usually one or more neutrons. Outside of the nucleus are energy levels (also called shells), which contain one or more electrons.

    Posted 6 months ago in Form 2

    Oxygen

    why is it possible to collect hydrogen gas by pop sound

      0       5

    Comments  

    Dan Macmillan   Posted on 2 months ago

    actually hydrogen is very light compared to other gases .So hydrogen can be collected through down ward delivery or up ward displacement of air.

    ADAM STRATEGY   Posted on 3 months ago

    IT IS NOT POP SOUND THAT COLLECTS GAS BUT IT IS THE SOUND THAT TELLS YOU THAT HYDROGEN IS PRESENTLY BEING COLLECTED

    Zahra Aljabry   Posted on 4 months ago

    well said frank

    Frank Majibwene   Posted on 5 months ago

    it is not possible to collect hydrogen by pop sound but it is possible to determine it by a pop sound when a glowing splint is put into it

    Posted 6 months ago in Form 4

    Pollution

    What is Alkene

      1       5

    Comments  

    Levy Omuga   Posted on 4 months ago

    Is unsaturated hydrocarbon which has double bond

    Frank Majibwene   Posted on 5 months ago

    is unsatureted hydrocarbon with double bond

    Beatrice Laizer   Posted on 6 months ago

    Is an unsaturated hydrocarbon which has double bond

    Napoleon Abdul   Posted on 6 months ago

    Pp

    Posted 6 months ago in Form 1

    Introduction To Chemistry

    hey what are the importances of studying biology

      1       6

    Comments  

    Naima Saad   Posted on 3 weeks ago

    U can apply in many careers ,example doctot ,pharmacist and laboratory technician

    Naima Saad   Posted on 3 weeks ago

    U can apply in many careers ,example doctot ,pharmacist and laboratory technician

    ADAM STRATEGY   Posted on 3 months ago

    BIOLOGY IMPORTANCE VARIES BUT IN CHEMISTRY THEY CAN BE EXPRESSED THROUGH
    -ANATOMY REACTIONS LIKE DIGESTIVE ENZYMES
    -EFFECTS OF RADIOACTIVITY (RADIOACTIVE ELEMENTS LIKE URANIUM) ON LIVING THINGS
    AGRICULTURAL FACTORS LIKE MEDICINE AND FERTILIZERS
    JOB SPECIALISATION LIKE DOCTORS PHARMACISTS

    Levy Omuga   Posted on 4 months ago

    You said that importance of study biology and your title is introduction to chemistry please be serious

    Posted 6 months ago in Form 1

    Introduction To Chemistry

    Hey guys are you happy that were going back to school

      3       16

    Comments  

    Brinley Pally   Posted on 4 months ago

    of course

    Henry Danger   Posted on 4 months ago

    mamb

    Levy Omuga   Posted on 4 months ago

    I am levy I have not happy today because our president Mkapa is dead

    Marion Mukoye   Posted on 5 months ago

    How do you know if we are going back to school?

    Posted 6 months ago in Form 3

    Extractions Of Metals

    What is the difference btn fractional and destructive distillation?

      1       4

    Comments  

    Frank Majibwene   Posted on 5 months ago

    fractional distilation involves strongly heating of two liquids for the purpuse of separating them
    but destructive distilation is the decomposition of a substance, as wood or coal, by heating with a minimal exposure to air,

    Beatrice Laizer   Posted on 6 months ago

    Oh ,distructive distillation is used to separate liguids containing dissolved substances

    Kèylie Seãn   Posted on 6 months ago

    How about destructive distillation?

    Beatrice Laizer   Posted on 6 months ago

    Fractional distillation involve heating two liguid which have same or nearly boiling points

    Posted 6 months ago in Form 4

    Organic Chemistry

    Mention five importances of organic chemistry.

      1       1

    Comments  

    Frank Majibwene   Posted on 5 months ago

    organic chemistry is
    * used in making pvc
    *used in making flouro chloro carbons

    Posted 6 months ago in Form 3

    Acids, Bases And Salts

    why water does not adding to the acid

      3       3

    Comments  

    Frank Majibwene   Posted on 5 months ago

    water is not added into acids becouse it may explode

    Beatrice Laizer   Posted on 6 months ago

    I can say in this language that an acid is a water lover that's why when you add water to an acid suddenly it react forward in water

    That's why we're required to ad an acid to the water but not water to an acid

    Kèylie Seãn   Posted on 6 months ago

    Iweke vzur iyoo

    Posted 6 months ago in Form 4

    Soil Chemistry

    What is soil degradation

      0       1

    Comments  

    Beatrice Laizer   Posted on 6 months ago

    Is the loss of soil fertility, and productivity

    Posted 6 months ago in Form 1

    Heat Sources And Flames

    hi guys anybody online

      1       5

    Comments  

    Naima Saad   Posted on 3 weeks ago

    Here

    Brinley Pally   Posted on 4 months ago

    hi there

    Renatus Philimon   Posted on 6 months ago

    let's chat guys

    Kèylie Seãn   Posted on 6 months ago

    Yeah

    Posted 6 months ago in Form 1

    Introduction To Chemistry

    What are the branches of chemistry

      0       5

    Comments  

    Frank Majibwene   Posted on 5 months ago

    organic chemistry,soil chemistry,bio chemistry,inorganic chemistry,organic chemistry

    Renatus Philimon   Posted on 6 months ago

    I think those are the correct one in my side[BUT YEAH]

    Renatus Philimon   Posted on 6 months ago

    guys what about?
    biochemistry
    inogarnic chemistry &
    orgarnic chemistry

    Imani Sherrie   Posted on 6 months ago

    And what about analytical chemistry?

    Posted 6 months ago in Form 3

    Extractions Of Metals

    Hey,what are criteria/stages for the choice of the best methods of extracting a metal from its ore?

      0       3

    Comments  

    Frank Majibwene   Posted on 5 months ago

    most reactive metals= electrolysis
    moderate reactive= reduction
    less reactive= chemical reactions

    Beatrice Laizer   Posted on 6 months ago

    Reduction
    Purification
    Concentration
    Roasting

    Kèylie Seãn   Posted on 6 months ago

    I think...
    1)Mining and crashing
    2)concentration of the ores
    3)Roasting or calcination
    4)reduction of oxides from metals
    5)purification of metals

    Posted 6 months ago in Form 2

    Formula Bonding and Nomenclature

    what  is formula,bounding and nomenclature

      0       3

    Comments  

    JETHRO MAZIMA   Posted on 6 months ago

    true on what henry macharia has talked about

    Fankie Peace   Posted on 6 months ago

    correct

    Henry Macharia   Posted on 6 months ago

    Bonding is when two or more atoms combine chemically and an attractive force exists btn the atoms
    Nomenclature is the naming system of organic compounds

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