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tggl 2 paper lagi....cptla !!!!!!!!!

cptla mse berlalu...ak xsaba nk tamatkan perjuangan yg menyiksakan nih..... abes sc subjek aritu ak da ckup happy...tp what about result??? lanx la....yg pnting spm abes...2 risau len kali....hehehe masalah mkin serabut mlm td....hmmm ntahla JAMUAN FORM very tired handle things like this... ak bukanlah the 1st person about this event...but mlm td ak mndgr luahan hati the 1st person tuh...pity him as leader he should know everything but.... he only know the result..not discussion.. hahaha....cmne la ak bole terlibat dlm mnde2 nih... klaka btol...it's a kind of joking... entahla....many things come up in this time.. wat mke slmber pastu tido......the best way ever to escape this problem don't want to talk about this anymore... this evening....ak blk ostel enjoy my life.... i've no idea anymore.....(",)

little more step to get it !!!!!

trying the best for my trial spm...n i got it 9A's from 11....congratulate to myself.... even i get the clue b4 exam...hehee... this include in my effort...huhu repair my bad addmath n bio also physic n i am chemist fan!!! haHHAHA...all emotion.. along 2 days at home...i just: sleeping + watching + eating thank god the internet in problem.... just now...the network is okey of course...i am happy with it addmath still not finish...same with chemist..bio too... oh yes..physic ahhh...no stress ok!!!! is my english ok??? sorry if there is any mistakes.... i got amir's....???huhu juz wait n see luv the network(",)

raya...raya...raya...!!!!

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seronok gler rye taun nih... best gilerrr arhhhh!!!! nk tw x sbb ap???? taun ni rye meriah coz abg ngn akk ak sume rye kat uma... da 2 taun abg ak yg kat mesir tu x rye sesme ngn kitorg... akk ak yg kat jordan tu pon sme.... cume yg xde abg ipar ak je.. dye kne kje tym rye....sdey an!!! yg blk cume akak ngn ank dye... tu pon dah meriah sgt da... ak nk letak gmba tp xmsuk pc ag.... nnt da msuk ak letak laa... ok...setakat nih....daaaaaaaaaa~~

selamat hari raya~~

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kat sini...aja nk mintak maaf atas segala salah dan silap.... kita berdoa la semoga ramadan yang berlalu ini bukanlah ramadan lita yang terakhir..... ...............selamat hari raya maaf zahir dan batin...................... (",)

carbon compound [part 9]....final

SPM Form 5 – Terminology and Concepts: Carbon Compounds (Part 9 – Final) Polymers 1. Polymer – many small units ( monomers ) joining together to formed large molecule. 2. Polymer can be classified into two groups: synthetic polymers / man-made polymers (polythene; PVC – polyvinyl chloride; artificial silk; and polypropene) natural polymers (natural rubber; starch; cellulose; and proteins) 3. Natural polymer: Carbohydrates (polysaccharides) (starch, glycogen and cellulose) General formula: C x (H 2 O) y with the ratio of H:O = 2:1 Carbohydrates have cyclic structure. Monomer: glucose (C 6 H 12 H 6 ) Reaction to form polymer: condensation reaction (- H 2 O) 4. Natural polymer: Protein (polypeptide) Protein consists of carbon, hydrogen, oxygen and nitrogen (some have sulphur, phosphorus and other elements) Monomer: amino acids Amino acids have two functional group which are carboxyl group (-COOH) and amino group (-NH 2 ) Reaction to form polymer: condensation reaction (- H

carbon compound [part 8]

SPM Form 5 – Terminology and Concepts: Carbon Compounds (Part 8 ) Non-Hydrocarbon – Fats 1. Fatrs are non-hydrocarbons which contain carbon, hydrogen and oxygen atoms . 2. Fats (lipids / triglycerides) are belonging to the group in ester . 3. Natural esters are formed from glycerol and fatty acids . Name of fat Molecular formula of ester Types of fatty acids Lauric acid* CH 3 (CH 2 ) 10 COOH Saturated Palmitic acid* CH 3 (CH 2 ) 14 COOH Saturated Stearic acid* CH 3 (CH 2 ) 16 COOH Saturated Oleic oxide ** CH 3 (CH 2 ) 7 CH=CH(CH 2 ) 7 COOH Unsaturated Linoleic acid*** CH 3 (CH 2 ) 4 CH=CHCH 2 CH=CH(CH 2 ) 7 COOH Unsaturated Linolenic acid*** CH 3 CH 2 CH=CHCH 2 CH=CHCH 2 CH=CH(CH 2 ) 7 COOH Unsaturated * Saturated: C-C single bonds ** Unsaturated (monounsaturated): C=C double bonds *** Unsaturated (polyunsaturated): C=C double bonds 4. Animal fats have higher percentage of saturated fatty acids than unsaturated fatty acids. 5. Plant o

carbon compound [part 7]

SPM Form 5 – Terminology and Concepts: Carbon Compounds (Part 7) Non-Hydrocarbon – Esters 1. General formula: C n H 2n+1 COOC m H 2m+1 Where n = 0, 1, 2, 3 … and m = 1, 2, 3 … (n and m = number of carbon) R COO R ‘ where R and R ‘ represented the same or different alkyl groups. 2. Esters are non-hydrocarbons which contain carbon, hydrogen and oxygen atoms. 3. The functional group in ester is carboxylate group, – COO -. C n H 2n+1 COOH + C m H 2m+1 OH –> C n H 2n+1 COO C m H 2m+1 + H 2 O First part: taken from the alcohol (alkyl group) Second part: taken from the carboxylic acid (-oic to -oate) Name of ester Molecular formula of ester Prepared from Ethyl methan oate HCOOC 2 H 5 Ethanol + Methanoic acid Methyl ethan oate CH 3 COOCH 3 Methanol + Ethanoic acid Propyl ethan oate CH 3 COOC 3 H 7 Propanol + Ethanoic acid Ethyl propan oate C 2 H 5 COOC 2 H 5 Ethanol + Propanoic acid 4. Physical properties of ester Name Odour 3-metylbutyl aceta

carbon compound [part 6]

PM Form 5 – Terminology and Concepts: Carbon Compounds Non-Hydrocarbon – Carboxylic Acids 1. General formula: C n H 2n+1 COOH Where n = 0, 1, 2, 3 … (n = number of carbon) 2. Carboxylic acids are non-hydrocarbons which contain carbon, hydrogen and oxygen atoms. 3. The functional group in alcohols is carboxyl group, – COOH. Name of carboxylic acids Molecular formula of alcohol Methan oic acid (Formic acid) HCOOH Ethan oic acid (Acetic acid) CH 3 COOH Propan oic acid C 2 H 5 COOH Butan oic acid C 3 H 7 COH 4. Physical properties of carboxylic acid Name Molecularformula Boiling point (°C) Methan oic acid (Formic acid) HCOOH 101 Ethan oic acid (Acetic acid) CH 3 COOH 118 Propan oic acid C 2 H 5 COOH 141 Butan oic acid C 3 H 7 COH 164 Solubility in water – generally in carboxylic acid (the less than four carbon atoms) are very soluble in water and ionise partially to form weak . Density of carboxylic acid – density of carboxyl

carbon compound [part 5]

SPM Form 5 – Terminology and Concepts: Carbon Compounds (Part 5) Non-Hydrocarbon – Alcohol 1. General formula: C n H 2n-1 OH Where n = 1, 2, 3 … (n = number of carbon) 2. Alcohols are non-hydrocarbons which contain carbon, hydrogen and oxygen atoms. 3. The functional group in alcohols is hydroxyl group, – OH. Name of alcohol Molecular formula of alcohol Methan ol CH 3 OH Ethan ol C 2 H 3 OH Propan ol / Propan-1- ol C 3 H 5 OH Butan ol / Butan-1- ol C 4 H 7 OH Pentan ol / Pentan-1- ol C 5 H 9 OH Hexan ol / Hexan-1- ol C 6 H 11 OH Heptan ol / Heptan-1- ol C 7 H 13 OH Octan ol / Octan-1- ol C 8 H 15 OH Nonan ol / Nonan-1- ol C 9 H 17 OH Decan ol / Decan-1- ol C 10 H 19 OH 4. Physical properties of alcohol Name Molecular formula Melting point (°C) Boiling point (°C) Physical state at 25°C Methan ol CH 3 OH -97 65 Liquid Ethan ol C 2 H 3 OH -117 78 Liquid Propan ol C 3 H 5 OH -127 97 Liqui

carbon compound [part 4]

SPM Form 5 – Terminology and Concepts: Carbon Compounds 1. Comparing (Similarities and Differences) Properties of Alkanes and Alkenes Physical Properties Alkanes Alkenes Physical state Physical state changes from gas to liquid when going down the series. Same with alkanes. Electrical conductivity. Do not conduct electricity at any state. Same with alkanes. Boiling points and melting points Low boiling points and melting points (number of carbon atoms per molecule increases). Same with alkanes. Density Low densities (number of carbon atom per molecule increases). Same with alkanes. Solubility in water Insoluble in water (soluble in organic solvent) Same with alkanes. Chemical Properties Alkanes (Substitution reaction) Alkenes (Addition reaction) Reactivity Unreactive Reactive Combustion Burn in air and produce yellow sooty flame. Burn in air and produce yellow and sootier flame compare to alkanes. Reaction with bromine solution

carbon compound [part 3]

SPM Chemistry Form 5 – Terminology and Concepts: Carbon Compounds (Part 3) Family of Hydrocarbon – Alkene 1. General formula: C n H 2n Where n = 2, 3, 4 … (n = number of carbon) 2. Alkenes are unsaturated hydrocarbons which contain one or more carbon-carbon (C = C) double bonds in molecules. 3. The functional group in alkenes is carbon-carbon double (C = C) bond. Name of alkene Molecular formula of alkene Eth ene C 2 H 4 Prop ene C 3 H 6 But ene C 4 H 8 Pent ene C 5 H 10 Hex ene C 6 H 12 Hept ene C 7 H 14 Oct ene C 8 H 16 Non ene C 9 H 18 Dec ene C 10 H 20 Molecular formula is a chemical formula that shows the actual number of atoms of each type of elements present in a molecule of the compound. Example: molecular formula of butene is C 4 H 2x 4 = C 4 H 8 4. Physical properties of alkenes Name Molecularformula RMM Density(g cm -3 ) Physical state at 25°C Eth ene C 2 H 4 28 0.0011 Gas Prop ene C 3 H 6 42 0.0018

carbon compound [part 2]

SPM Chemistry Form 5 – Terminology and Concepts: Carbon Compounds (Part 2) A) IUPAC ( International Union of Pure and Applied Chemistry ) – is used to name organic compound. Organic compound is divided into three portions which is Prefix + Root + Suffix . Prefix – name of the branch or side chain. General formula: C n H 2n+1 –Where n = 1, 2, 3, … (n = number of carbon) Formula Branch or name of group CH 3 - methyl C 2 H 5 - ethyl C 3 H 7 - propyl C 4 H 9 - butyl C 5 H 11 - pentyl Alkyl group signifies that it is not part of the main chain. Two or more types of branches are present, name them in alphabetical order. Number of side chain Prefix 2 Di- 3 Tri- 4 Tetra- 5 Penta- 6 Hexa- More than one side chains are present, prefixes are used. Root – the parent hydrocarbon (denotes the longest carbon chain). Number of carbon atoms Root name 1 meth- 2 eth- 3 prop- 4 but- 5 pent- 6

carbon compound [part 1]

SPM Chemistry Form 5 – Terminology and Concepts: Carbon Compounds Organic compounds – carbon containing compounds with covalent bonds. Inorganic compounds – non-living things and usually do not contain carbon but few carbon containing inorganic compounds such as CO 2 , CaCO 3 and KCN. Hydrocarbons – organic compounds that contain hydrogen and carbon atom only. Non-hydrocarbons – organic compounds that contain other elements (oxygen, nitrogen, iodine, phosphorus) Saturated hydrocarbons – only single bonded (Carbon-Carbon) hydrocarbons. Unsaturated hydrocarbons – at least one double / triple bonded (Carbon-Carbon) hydrocarbons. Complete combustion – organic compounds burn completely which form CO 2 and H 2 O. Example: C 2 H 5 OH (l) + O 2 (g) –> 2CO 2 (g) + 3H 2 O (l) Incomplete combustion – organic compounds burn with limited supply of O 2 which form C (soot), CO, CO 2 and H 2 O. Homologous Series Homologous series – organic compounds with similar formul

mlm.....pagi2 yg terlalu hening~

ak xtw npe??? knpe nih.... aja tolong lah..... just buku je...jgn la cmni....~ wake up!!!!!

jadual trial spm 2010 ~

jadual nih untuk bdk klas sains..... 23.9.2010 bm 1....bm 2 24.9.2010 bi 1....bi 2 27.9.2010 math 1....math 2 28.9.2010 sej 1....sej 2 30.9.2010 addmath 1....addmath 2 1.10.2010 bio 1....bio 2 4.10.2010 bio 3 5.10.2010 phy 1....phy 2 6.10.2010 chem 1....chem 2 7.10.2010 phy 3....chem 3 8.10.2010 bat 1....bat 2 12.10.2010 pqs 14.10.2010 psi 1....psi 2

korea....jepun....malaysia....?????

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snsd... suju... wondergirl hana yori dango.. hana kimi hana kimi dok kat malaysia..... dgr lagu korea.... tgk cter jepun.... hussyyyhhh.....xtw nk kata ap dah!!!! malaysia sonok.... lagu korea bez.... cter jepun menarik ckit... hahaha... bandingkan laaa....

penat tol...

segar'y......sedap seh tdo tym nih....hujan~~ huuuuuhuuuu~~~~ akk ak da lme lentok kt sblh nih....penat buat hntrn... nk kawen la ktekn... smlm ad knduri kt uma....tahlil ckit...mesy ckit... psl knduri la kot... td kms pggn mgkuk ngn abg muaz.... pastu kms peti ais....penat sehh....haha act.....xdela penat sgt.... skang nih.....blurrrr...sgt xtw....dgr lgu rye~~~ bju rye da bli....sdey.....bju rye kale ijau tp yg len kale biru... nnt jd aneh...xnk!! lnx la...salam~

Work, Energy, Power and Efficiency

Understanding Work, Energy, Power and Efficiency Physics form Work 1. Work is defined as the product of the applied force and the displacement of an object in the direction of the applied force. 2 . W = F x S 3. W= work done, F = force applied, S = displacement in the direction of force. 4. SI unit for work = Joule (J), other unit = Nm 5. Work is not done when: a. The object is stationary a.k.a not moving b. No force is appliedn the object in the direction of displacement. c. The direction of motion of the object is perpendicular to that of the applied force. 6. When work is done to an object, energy is transferred to the object. Energy (Energy is the capacity to do work) 1. Energy exists in different forms: kinetic energy , gravitational potential energy , elastic potential energy , sound energy , heat energy , light energy , electrical energy and chemical energy. 2. The unit for energy is Joule (J) – same as work 3. The work

kawan~

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cute en ktorg..... istilah kawan.....sahabat....teman.. sume'y sme tp isi'y laen.... sape yg ad kwn tw la kn....hahaha.... ak ad kwn.....rmi kwn....sgt ramai.... dr sekola rendah + tadika + sekola menengah...... klu nk dikira mmg terlalu ramai....ecceeehhh ayt cm poyos melampau je... hahahahaa.... TYM KANAK2.... ak ad kwn plg baik.... ktorg 4 org slalu b'sme 4ever larhhh.... ecah+yanie+atin+ak la.... bez tol....nnt ak letak gmba diorg... tp kitorg b'3 da...coz psl ap nta atin cm da xngam ngn kitorg ag... lupe la....cter lme....sgt.....hyper lme la... TYM DA AGK2 BESAR.... skang ak pon ad kwn baek gk.... kitorg b'3.... ak + shak + kin shak + kin : the most bestest fren 4ever lahh.....(betapa bez'y ak describe korg) hahahaha....ngn shak....ak pon xtw cmne persahabatan kitorg b'mula.... agk aneh....mmg aneh pon...hyper aneh lahhh....plek la... tetibe tym form2 kitorg bole dok 1meja prep..b'2 je plak tuh.... padahal tym form1 ak xdela rpr sgt ngn dye....haha