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    Posted 2 years ago in Form 2

    Oxygen

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

     

      7       39

    Comments  

    Razia Sheikh   Posted on 2 months ago

    glass does not react to many chemicals

    JUMA THOBIAS   Posted on 4 months ago

    Glass is easy to clean

    Ina Ally   Posted on 6 months ago

    Glass tools can't burn while plastic can burn

    Aneta Augustine   Posted on 7 months ago

    The doors are opened different or closed in oder to simplify exit when an accident has occcured

    Posted 2 years ago in Form 1

    Introduction To Chemistry

    hi guys whatsup

      0       6

    Comments  

    GIBOR RWEZAURA   Posted on 2 months ago

    Nothing is up

    Makenzie Johnson   Posted on 2 years ago

    its good we know its the best you can do











    Ciara Jol   Posted on 2 years 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 2 years ago

    tupange

    Posted 2 years 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  

    All Usyar_4   Posted on 2 years ago

    who has the most correct definition of Brittle?

    ADAM STRATEGY   Posted on 2 years 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 2 years ago

    BRITTLE MEANS EASILY BROKEN

    Frank Majibwene   Posted on 2 years 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 2 years ago in Form 2

    Fuels And Energy

    what is fuel & energy

      1       12

    Comments  

    Nelson Kitomary   Posted on 2 months ago

    HELLO GEOFREY

    Geofrey Mtepa   Posted on 2 months ago

    Hi guys

    Ina Ally   Posted on 6 months ago

    Fuel are combustible material which can burn in air.energy is ability of doing work

    Fredrick Simon Mgisha Mgisha   Posted on 1 year ago

    enegy is the ability to do work while fuel is the substance which when burnt produce heat and light

    Posted 2 years ago in Form 2

    Formula Bonding and Nomenclature

    What is mercury

      0       8

    Comments  

    HARRYSON MALINGA   Posted on 2 years ago

    MERCURY is the only liquid metal

    Naima Saad   Posted on 2 years ago

    Mrcury is a metal in liquid form

    ADAM STRATEGY   Posted on 2 years ago

    MERCURY IS ALSO AN ADHESIVE TYPE OF ELEMENT

    Brinley Pally   Posted on 2 years ago

    is achemical element with symbol Hg and atomic number 80.

    Posted 2 years 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 2 years ago

    We are fine

    Beatrice Laizer   Posted on 2 years ago

    Thanks for mentioning me,you too dear friend

    Posted 2 years ago in Form 1

    Air Combustion, Rusting And Fire Fighting

    why is air not a compound

      2       4

    Comments  

    Ciara Jol   Posted on 2 years ago

    true dat laizer

    Frank Majibwene   Posted on 2 years ago

    air isn't chemically combined but its physically combined

    Marion Mukoye   Posted on 2 years ago

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

    Beatrice Laizer   Posted on 2 years 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 2 years ago in Form 2

    Atomic Structure

    Hi guys what is atomic structure?

      1       3

    Comments  

    Ciara Jol   Posted on 2 years ago

    hie fankie

    ADAM STRATEGY   Posted on 2 years 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 2 years 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 2 years ago in Form 2

    Oxygen

    why is it possible to collect hydrogen gas by pop sound

      0       5

    Comments  

    Dan Macmillan   Posted on 2 years 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 2 years 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 2 years ago

    well said frank

    Frank Majibwene   Posted on 2 years 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 2 years ago in Form 4

    Pollution

    What is Alkene

      1       6

    Comments  

    Neema Mbonda   Posted on 1 year ago

    Is unsaturated hydrocarbon with double bonds between carbon atoms which has a general formular of C......

    Levy Omuga   Posted on 2 years ago

    Is unsaturated hydrocarbon which has double bond

    Frank Majibwene   Posted on 2 years ago

    is unsatureted hydrocarbon with double bond

    Beatrice Laizer   Posted on 2 years ago

    Is an unsaturated hydrocarbon which has double bond

    Posted 2 years ago in Form 1

    Introduction To Chemistry

    hey what are the importances of studying biology

      1       9

    Comments  

    Ina Ally   Posted on 6 months ago

    Helps to understand our selfs

    Ciara Jol   Posted on 2 years ago

    biology also improves nature

    Cinderella Modimo   Posted on 2 years ago

    it helps to understand the environment

    Naima Saad   Posted on 2 years ago

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

    Posted 2 years 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 2 years ago

    of course

    Henry Danger   Posted on 2 years ago

    mamb

    Levy Omuga   Posted on 2 years ago

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

    Marion Mukoye   Posted on 2 years ago

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

    Posted 2 years ago in Form 3

    Extractions Of Metals

    What is the difference btn fractional and destructive distillation?

      1       4

    Comments  

    Frank Majibwene   Posted on 2 years 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 2 years ago

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

    Kèylie Seãn   Posted on 2 years ago

    How about destructive distillation?

    Beatrice Laizer   Posted on 2 years ago

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

    Posted 2 years ago in Form 4

    Organic Chemistry

    Mention five importances of organic chemistry.

      2       2

    Comments  

    Simon Wenceslaus   Posted on 2 years ago

    Making plastics

    Frank Majibwene   Posted on 2 years ago

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

    Posted 2 years ago in Form 3

    Acids, Bases And Salts

    why water does not adding to the acid

      3       3

    Comments  

    Frank Majibwene   Posted on 2 years ago

    water is not added into acids becouse it may explode

    Beatrice Laizer   Posted on 2 years 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 2 years ago

    Iweke vzur iyoo

    Posted 2 years ago in Form 4

    Soil Chemistry

    What is soil degradation

      0       1

    Comments  

    Beatrice Laizer   Posted on 2 years ago

    Is the loss of soil fertility, and productivity

    Posted 2 years ago in Form 1

    Heat Sources And Flames

    hi guys anybody online

      1       7

    Comments  

    John The Joker   Posted on 2 months ago

    yap

    GIBOR RWEZAURA   Posted on 2 months ago

    Nope

    Naima Saad   Posted on 2 years ago

    Here

    Brinley Pally   Posted on 2 years ago

    hi there

    Posted 2 years ago in Form 1

    Introduction To Chemistry

    What are the branches of chemistry

      0       5

    Comments  

    Frank Majibwene   Posted on 2 years ago

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

    Renatus Philimon   Posted on 2 years ago

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

    Renatus Philimon   Posted on 2 years ago

    guys what about?
    biochemistry
    inogarnic chemistry &
    orgarnic chemistry

    Imani Sherrie   Posted on 2 years ago

    And what about analytical chemistry?

    Posted 2 years 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 2 years ago

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

    Beatrice Laizer   Posted on 2 years ago

    Reduction
    Purification
    Concentration
    Roasting

    Kèylie Seãn   Posted on 2 years 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 2 years ago in Form 2

    Formula Bonding and Nomenclature

    what  is formula,bounding and nomenclature

      0       3

    Comments  

    JETHRO MAZIMA   Posted on 2 years ago

    true on what henry macharia has talked about

    Fankie Peace   Posted on 2 years ago

    correct

    Henry Macharia   Posted on 2 years 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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