manfaatkan masa yang ada...

Salam...
Dalam masa bercuti sempat gak cikgu p sekolah untuk "make over" kelas cikgu. Masa merancang bersama budak2 tu adala nama 12 orang nak datang jam 9 pagi... tgk2 tadi yang muncul 5 orang ja... tambah pula adaseorang pengkritik bebas dari 2A yang akhirnya dia pun terpaksa mengecat pulak... hehehe...
Tetapi alhamdulillah... cikgu sangat berpuas hati sebab ia jadi seperti yang dirancangkan...
bleh la menjadi sumber ilham nanti... hehehehe....

Cuma sudut bacaan ja yang belum siap lagi dan bahagian atas papn kenyataan... insyaallah weekend minggu depan boleh nak siapkan kot... nantikan gambar kelas yang terbaru ya...

PEKA KIMIA TING 5 2012- ROR

Alhamdulillah semalam, 20/1/12, 5B ngan 5D telah lengkap menyiapkan PEKA mereka yang pertama dengan jayanya. Laporan juga telah berjaya dihantar untuk diperiksa. PEKA pertama ni penting sebab disini pelajar akan mula diingatkan tentang kesalahan yang mereka lalukan dan disini juga mereka perlu mengenalpasti setiap keperluan dan kepentingan PEKA itu sendiri. Semoga pelajar-pelajar ku ini bersiapsedia untuk menghadapi cabaran SPM di bulan November nanti, insyaallah...

Bola jaring 2012

petang jumaat yang happening...
bestnya petang semalam... walaupun kaki bengkak tetap gak pi sekolah utk sesi pemilihan bola jaring 2012. sampai ja kat sekolah azlina ngan kak che rabiah dah sampai dah mula pun training...
 bebudak pun dah ramai...
ok gak utk sesi pertama . ramai gak yang hadir...
pastinya petang semalam memang ada yang main mcm kartun. lawak pun ada, yang kena denda pun ada...
apa2 pun... setiap detik yang kita lalui memng sangat berharga dan jangan disia-siakan insyaallah ada hikmahnya...
Semoga pasukan bolajaring smk bukit jambul terus cemerlang diperingkat negeri seterusnya peringkat kebangsaan... Bola Jaring... Boleh...

Tahniah kepada cik azlina dan Pn che rabiah untuk permulaan yang hebat... semoga sentiasa hebat sepanjang tahun...

FORM 2 CHAPTER 1

Sensory organs:

Skin:

·                     sense of touch

·                     Stimuli : hot, cold, pain, pressure, touch

Nose:

·                     sense of smell

·                     Stimuli : Chemical substance in the air

Tongue:

·                     Sense of taste

·                     Stimuli:Chemical substance in the food

Ear:

·                     sense of hearing

·                     Stimuli: sound

Eye:

·                     sense of sight

·                     Stimuli: light

Properties of light:

·                     light can be reflected and refracted

Defects of vision:

1.             long sighted

·                     Can see far objects clearly

·                     Image formed behind retina

·                     Causes:

-                      eyeball too small/short

-                      lens too thin

·                     correction – Use convex lens

1.             short sighted

·                     can see near objects clearly

·                     image formed in front of retina

·                     causes:

-                      eye ball too big/long

-                      Lens too thick

·                     correction – use concave lens

Properties of sound:

·                     is a form of energy

·                     produced by vibrating objects

·                     travels in the form of waves

·                     can be reflected (echo)

·                     can be absorbed

·                     can only travel through medium

·                     cannot travel through vacuum

Stimuli and responses in plants:

Phototropism:

·                     Stimuli – Light

·                     Response to obtain sunlight

Geotropism:

·                     Stimuli – gravity

·                     Response to root itself firmly in the soil/to obtain mineral salts and water

Hydrotropism:

·                     stimuli – water

·                     Response to obtain water and mineral salts

Thigmotropism:

·                     Stimuli – touch

Response to obtain support and light

Selamat Belajar Kimia...

Salam sejahtera,

Silalah layari link dibawah untuk mendapatkan maklumat tentang subtopik bagi kimia dengan lebih lanjut.
selamat belajar kimia.

http://biokimiaspm.blogspot.com/2011/03/thermorchemistry.html

THERMORCHEMISTRY FORM 5

FIRST TIPS TO MASTER IN THIS TOPIC:

1. You need to have a calculator.
2. Good in conversion of mol to mass, mol to no. of particles, mol to volume of gas in room condition and STP.
3. Balance the equation.
4. Label the unit with the respective symbols.

 WHAT YOU NEED TO KNOW FROM THIS TOPIC:

1. Differentiate between the bond breaks and the bond reforms.
2. If the reactants breaks a bond = the heat is absorbed.
3. If the product reforms ( forming a bond ) = the heat is released.
4. When the total energy absorbed is more than the total energy released = Endothermic reaction.( with a positive sign, + ).
5. When the total energy absorbed is less than the total energy released = Exothermic reaction. ( with a negative sign, - )
6. List the examples of the endothermic reactions and exothermic reaction. Make sure you enable to write the equation correctly and state the observation.
7. Enable to describe the endothermic reaction / exothermic reaction.

For example:

 CH₄ + 2O₂ à CO₂ + 2H₂O     ΔH = -890 kJ mol^-1

a)     The combustion of methane is exothermic reaction.

b)     1 mol of methane burns completely in excess oxygen to form 1 mol of carbon dioxide gas and 2 mol of water releases 890kJ heat energy.

c)      The total energy absorbed when methane breaks the bond is lower than the total energy released when carbon dioxide and water were formed.

d)     The surrounding temperature is rise.

8. Draw the energy level diagram. ( EXXO =  Z, energy content in reactants is higher , ENDO = S, energy content in reactants is lower. )

    9. EXOTHERMIC AND ENDOTHERMIC REACTION IN DAILY LIFE

 a)     coal is burnt heat is given off. The heat given off is used for cooking or to keep the house warm

b)     Cold packs and Hot packs are often used in sports. They are used to lessen pain for injuries. Salts used in cold packs – NH₄Cl , NH₄NO₃, Na₂S₂O₃, KNO₃ packed separately with water. Salts used in hot packs – AlCl₃, CaO₃ , CaCl_.2H₂O, CuSO₄.2H₂O used to dissolves in water. When the pack is needed, the membrane is broken.

    10. TO CALCULATE THE ENERGY CHANGE:

                                       ΔH = mcθ

m = the mass of water used in the reaction(for combustion, water is used to  

       absorbed the heat release from the burning of ethanol).

c = the water heat capacity , 4.2 Jg^-1oC^-1

θ = the changes in the temperature of water used.

The Structure of the Atom - Chapter 2 F4

1. Matter is anyting that occupy space and has mass.
2. Definitions:
 - Atom - is the smallest particle of an element that can participate in a chemical reaction, tiny and discrete( isolate from one and another)
 - Molecule - is a group of two or more atoms which are chemically bonded together.( covalent / ionic bond )
 - Ion - positively charge / negatively charged particle, ( atom that losing electron > +ve ion / atom that receive electron > -ve ion )
3.  The kinetic theory of matter - discuss the arrangement and moving of particles, the forces of sttraction between particles and the energy content in the particles in the different state of matter.
4. The change in the state of matter is caused by heat supply to the particles.

----------------------------------------------------->
the increasing of heat : turn the solid particle to liquid and to solid

<-----------------------------------------------------
the decreasing of heat: turn the gas particle to liquid and to solid

the heat supply is absorbed by the particle. it cause the particle to move ( vibrate ) faster and overcome the force of attraction between the particles at their fixed positions.. the point where the solid particles become liquid is called "melting point" at this point the temperature is remains constant .

when the heat is released to the surrounding by the particles, ( the cooling process ) it cause the particle to lose their kinetic energy so, it moves slower. The particles then closer and attract to each other to form solid. At the point where the liquid becomes solid is called " freezing point". At this point the temperature remains constant.
5. The atomic structure=
a) John Dalton - a very tiny ball.
b) JJ Thompson- plum pudding model - atom is a sphere +vely charged with -vely charged particles called electron surround it.
c) Ernest Rutherford - atom have a +vely charge at the central region called nucleus with -vely charged particles electron moves around it.
d) Neils Bohr - electron moves in an orbit called shell.
e) James Chadwick - neutron gives half of the mass of atom and exist in the nucleus.
6. Subatomic particles of an atom=
a) Proton - relative electric charge = +1, relative mass 1
b) Neutron - relative electric charge = 0, relative mass 1
c) Electron - relative electric charge = -1, relative  mass 0.0005
7. Proton + Neutron = Nucleon , in nucleus of atom
8. Definitions =
 a) Proton number = is the number of protons in its atom
 b) Nucleon number =  is the total number of protons and neutrons in its atom.
9. the different proton number shows the different element. refer to the periodic table and make sure you enable to write the symbol of the element and their respective proton number and nucleon number.
10. the atom of the same element with different neutron number is called isotopes. examples are ; for Oxygen, O-16,O-17, O-18, or for Carbon, C-12, C-13, C-14.

11. Isotopes

1. Isotopes are atom of the same element with same number of proton but different number of neutrons.
2. Isotopes are atoms of the same element with same proton number but in different nucleon number.
3. Example :

1   H 1	2   H 1
Nucleon number = 1	Nucleon number = 2
Proton number = 1	Proton number = 1
Number of neutron = 0	Number of neutron = 1
-         Hydrogen -1 and hydrogen-2 are isotopes . Both have the same number or the same number of protons but in different in nucleon number because of the difference in the number of neutrons. -         Isotopes have the same chemical properties but different physical properties because they have the same electrons arrangements.

4. Uses of isotopes

i-                    Medical field          

-           To detect brain cancer

-           To detect thrombosis ( blockage in blood vessel ).

-           Sodium-24 is used to measure the rate of iodine absorption by   

            thyroid gland.

                  -           Cobalt-60 is used to destroy cancer cells.

                  -           To kill microorganism in the sterilizing process

ii-                  In the industrial field

-                     To detect wearing out in machines

-                     To detect any blockage in water, gas or oil pipes.

-                     To detect any leakage of pipes underground

-                     To detect defect/ cracks in the body of an aeroplane

iii-                 In the agriculture field

-                     To detect the rate of absorption of phosphate fertilizer in plants

-                     To sterile insect pests for plants.

iv-                In the archeology field

-           Carbon-14 can be used to estimate the age of artifacts.

12. Electron arrangement

1. the electrons are filled in specific shells. Every shell can be filled only with a certain number of electrons. For the elements with atomic numbers 1-20 ;

-         First shell can occupy with a maximum of 2 electrons.

-         Second shell can occupy with a maximum of 8 electrons.

-         Third shell can occupy with a maximum of 8 electrons.

b. Valence electrons are the electrons in the outermost shell of an atom.

Rate of reaction - Form 5

 1. Rate of reaction -   the changes occur / time taken for the changes to happen.
 2. There are 2 type of ROR-
      - average ROR - the total time taken for changes measured.
      - instantaneous ROR - the changes take place at a given time
 3. To calculate the average ROR is by measure the total changes occur and divide by the total time taken
     until the reaction is stopped.
     Example: The reaction of zink with hydrochloric acid-
                    a) the volume of hydrogen gas given off = 35.0 cm3.
                    b) the total time for reaction to stopped = 210 s
     So, the Average ROR = 35.0 / 210 = 0.17 cm3/s
  4. To calculate the instantaneous ROR -
      - you a need a graph of the reactant deacreases / product increases( Y axis) against the time ( X axis).
      - use a ruler to draw a tangen close to the point on the graph at given time.
        ( if the reactant decreases graph- make sure the tangen is not over/cross the curve of your graph )
        ( if the product increases graph - make sure the tangen is on top of the curve and not crossing the curve)
       - from the tangen draw a triangle and find the lengh of Y axis for the trianle  = dY, and
         and find the lenght of X axis for the trangle = dX
       - the Instanteneaous ROR  is  dY / dX.
       - tips - make sure the graph is evently scaled and the curve is smooth.
 5. Operation definition for Rate of  Reaction ( ROR) -
       - To measure the time taken for changes to occur ( the responding variable )  by using 
          stopwatch.
       - the responding variable could be the volume of gas liberated, decreases of reactant mass, increases
          of  product mass or the increases or decreases of temperature.
 4. There are 5 factors that affect the ROR-
       a) size of reactant - the bigger the size, the smaller the expose surface area.  so, the less number
           of collision to occur. Therefor the lower frequency of collision and the lower rate of reaction.
          - the smaller the size of reactant, the larger total surface area. So, the more collision to occur.
            Therefor the higher frequency of collision, effective collision and the higher rate of reaction.
          - Example of experiment - 20g of calcium carbonate chips and 20g of calsium                          
            carbonate powder with  25 cm3 of 0.5 moldm-3 Hydrochloric acid. The total rate of  reaction is
            calculated by measure the volume of Hydogen gas released per time taken. The apparatus needed
            are burette, basin, stopper with deliver tube, conical flask, measuring cylinder ,retort stand and stop
            watch.
       b) concentration of reactant -
          - when concentration of reactant is high, the more reactant can collide and more effective 
            collision occur. Therefor the ror is high.
          - when concentration of reactant is low, the less reactant can collide. Therefor the ror is low.
          - Example of experiment - 45cm3 of 0.5 moldm-3 sodium thiosulphate with  5 cm3 of 0.5 moldm-3
             Hydrochloric acid. The total rate of  reaction is calculated by measure the time taken of marked (on
             a white paper )dissappear.the experiment is repeated with different volume of Sodium thiosulphate in
             the solution. The apparatus needed are conical flask, measuring cylinder, filter paper, white paper
             with marked and stopwatch.

       c) temperature of solution -
         - when the temperature of solution is high , the particles of reactants have more kinetic 
            energy and it moves faster. Therefor more effective collision take place. So,the ROR is high.
         - cooling a mixture will slow down theparticles of reactants. so, fewer collisions take place and ROR is
           low.
        - Example of experiment - 45cm3 of 0.5 moldm-3 sodium thiosulphate with  5 cm3 of 0.5 moldm-3
           Hydrochloric acid. The total rate of  reaction is calculated by measure the time taken of marked (on a
           white paper )dissappear.The experiment is repeated with different temperature of Sodium thiosulphate
           solution. The apparatus needed are conical flask, measuring cylinder, filter paper, white paper with
           marked,thermometer and stop watch.

      d) Pressure on reactants -
         - the higher pressure will decrease the volume of reactants. Therefor the                       
           distance between particles is small.( the reactant is closer ). So, more effective                               
           collisions will take place and the ROR is higher.                              
       e) Catalyst on reaction -
        - all reactions require energy . the reaction only occur if the reactants achieved the energy level. The
          energy needed is called Activation Energy, Ea. The reaction only can happen if the reactants achieve at
          least (or more) than Ea.
       - the presence of catalyst will lowered the energy level. Therefor the reaction                            
          takes place faster because more reactants are easier to collide and react.
      -  Example of experiment - The decomposition of Hydrogen peroxide 20 - volume. The total rate of
          reaction is calculated by measure the time taken of glowing splinter to ignite.The experiment is
          repeated with the presence of Manganese (iv)oxide as catalst. The apparatus needed are conical flask,
          measuring cylinder, glowing splinter and stop watch.
       - application of catalyst in industry and daily life:
          i ) Combustion of charcoal - smaller sizes in burning with oxygen.
         ii ) Storing food in refrigerator - cold place to keep food stay fresh longer
            - to lower the activiteis of bacteria
         iii) Cooking food in Pressure Cooker - the higher pressure will increase the cooking temperature and
              the food is cooked faster.
        iv ) Haber Process - presence of iron powder as catalyst. The magnufacture of ammonia is faster.
        v  ) Contact Process - presence of Vanadium (v) oxide as catalyst, at 500C and pressure of 2 to 3
              atmosphere.The magnufacturer of Sulphuric acid.
        vi ) Ostwald Process - Combination of Platinum and Rhodium as catalyst in 850C and pressure of 5
              amp. The magnufacturer of Nitric acid.

Rancangan Pengajaran Kimia ting 5 2012

Salam,
Utk semakan pelajar dan guru, disini telah disertakan Rancangan Pengajaran Kimia Ting 5. Maaf ya Utk ranc ting 4 belum di hantar lagi. Sila tunggu di lain siaran.

Rancangan Pengajaran Kimia ting 5 2012

Date	Topic	Remark
4/1 - 13/1	Chap 1: Rate of Reaction 1.1 Rate of Reaction	(Pendaftaran Ko-k - 11/1)
16/1 - 20/1	1.2 Factors Affecting the Rate of Reaction	PEKA: Experiment 1.1 PEKA: Experiment 1.2
23/1 - 27/1	Cuti Tahun Baru Cina / Cuti Ganti 1 & 2	* Cuti Ganti 1 diganti pada 11/2 *Cuti Ganti 2 diganti pada 3/3
30/1 - 3/2	1.3 Collision Theory 1.4 Scientific Knowledge to Enhance Quality of Life	PEKA: Experiment 1.3 * Cuti Ganti Keputeraan Nabi Muhammad saw – 6/2 * Cuti Thaipusam – 7/2
8/2 - 24/2	Chap. 4: Thermochemistry 4.1 Energy changes in chemical reaction 4.2 Heat of precipitation 4.3 Heat of displacement 4.4 Heat of neutralisation	Laboratory Work 4.1A (Discussion) Laboratory Work 4.1 B PEKA: Experiment 4.1 PEKA: Experiment 4.2 PEKA: Experiment 4.3 PEKA: Experiment 4.4
27/2 - 6/3	4.5 Heat of combustion 4.6 The existence of various energy sources	Laboratory Work 4.2 (Discussion)
7/3 – 9/3	Formative Test 1
10/3 - 18/3	Cuti Pertengahan Penggal 1	9 days
19/3 - 23/3	Chap. 3: Oxidation and reduction 3.1 Oxidation and reduction	Laboratory Work 3.1 (Discussion)
26/3 - 30/3	3.2 Rusting as a redox reaction	Laboratory Work 3.2 (Discussion) Laboratory Work 3.3
2/4 - 6/4	3.3 The reactivity series of metals and its application	Laboratory Work 3.4 (Discussion) Laboratory Work 3.5 PEKA: Experiment 3.1
9/4 - 14/4	3.4 Electrolytic and chemical cells	Laboratory Work 3.6 (Discussion) Laboratory Work 3.7 (Discussion) Laboratory Work 3.8 (Discussion)
16/4 - 20/4	3.5 Appreciating the ability of elements to change oxidation numbers	* Sambutan Ulangtahun SMKBJ- 28/4 * Cuti Peristiwa 1 – 30/4  Sempena Sambutan Ulangtahun SMKBJ * Cuti hari Pekerja - 1/5
23/4 - 8/5	• Chap 2: Carbon Compounds • 2.1 Carbon Compounds • 2.2 Alkanes • 2.3 Alkenes 2.4 Isomerism	Laboratory Work 2.1 (Discussion) Laboratory Work 2.3 (Discussion) Laboratory Work 2.4 (Discussion) Laboratory Work 2.3 (Discussion) Laboratory Work 2.4 (Discussion) * Merentas Desa – 4/5 * Cuti Hari wesak 5/5
9/5 - 22/5	Peperiksaan Pertengahan Tahun	* Sambutan hari Guru – 25/5
26/5 - 10/6	Cuti pertengahan tahun	16 days
11/6 - 29/6	2.5 Alcohol 2.6 Carboxylic acids	Discussion on Mid-year Examination * Saringan Olahraga 2012    - 18/6-19/6 * Raptai Olahraga 2012    – 21/6 – 22/6 * Hari Sukan – 23/6 * Cuti Peristiwa 3 - 25/6
2/7 - 6/7	2.7 Ester1 2 .8 Fats	Laboratory Work 2.5 (Discussion) Laboratory Work 2.6 (Discussion) * Cuti Georgetown Heritage Day
9/7 - 13/7	2.9 Natural rubber	Laboratory Work 2.7 Laboratory Work 2.8 (Discussion) Experiment 2.1 (Discussion / Demo) * Hari anugerah Pelajar cemerlang    - 14/7
16/7 - 20/7	2.10 Homologous series 2.11 The variety of organic materials	* Cuti Peristiwa 3 – Cuti Awal Ramadhan - 23/7
24/7 - 3/8	Chap. 5: Chemicals for Consumers 5.1 Soaps and detergents	Laboratory Work 5.1 (1/8 – Awal Ramadan)
7/8 - 10/8	5.2 Food additives	* Cuti Nuzul Quran - 6/8
13/8 - 17/8	5.3 Medicines 5.4 The existence of chemicals
18/8 - 26/8	Cuti Pertengahan Penggal II	9 days
27/8 - 30/8	Revision Form 5 Topics	* Cuti Hari Merdeka - 31/8
3/9 – 19 / 9	Peperiksaan percubaan SPM 2011	* Cuti Hari Malaysia - 16/9 * Cuti Ganti Hari Malaysia - 17/9
24/9 – 28/9	Discussion on the SPM Trial Examination
1/10 - 12/10	Bengkel Mencapai Kecemerlangan SPM 2011
15/10 - 26/10	Program Pecutan Akhir SPM Kimia 2011	* Cuti Ganti 4 Sempena Aidiladha      - 25/10 - Cuti diganti pada 14/4 * Cuti Aidiladha - 26/10
29/10 - 9/11	Preparing for Examination	* Restu Ilmu SPM - 2/11
05/11	PEPERIKSAAN SPM 2011 BERMULA	Good Luck!
10/11 - 29/12	Cuti persekolahan akhir tahun	Yahoo...

Semoga ada kebaikan dari [erkongsian ini, Insyaallah.