Senyawa karbon adalah bagian dari senyawa organik yang diantaranya disusun oleh karbon. Senyawa karbon sangat berperan penting dalam dunia kesehatan terutama bahan sintetik obat yang sebagi…Full description
Warna-Warni Kimia
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kimiaFull description
Diagram Besi KarbonFull description
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referat forensik
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NOTA RINGKAS SEBATIAN KARBON 1.
Carbon compound is substance that consist Sebatian karbon
2.
Sebatian karbon organik merupakan sebatian karbon yang berasal
3.
Sebatian karbon tak organik merupakan sebatian karbon yang
4.
Hidrokarbon merupakan sebatian yang hanya mengandungi unsur karbon dan hidrogen sahaja.
5.
Alkohol ialah satu kumpulan sebatian karbon organik yang
6.
Sabun merupakan garam natrium atau kalium bagi asid lemak.
7.
Saponifikasi ialah tindak balas antara minyak dengan alkali untuk
8.
Asid menyebabkan menyebabkan penggumpalan lateks.
9.
Larutan ammonia mencegah penggumpalan lateks.
10.
Dalam proses pemvulkanan getah, atom sulfur membentuk rangkai silang antara rantai molekul getah.
11.
Getah tervulkan bersifat lebih keras, kuat, kenyal dan tahan haba
adalah bahan yang terdiri daripada unsur karbon yang bergabung dengan satu atau lebih unsur lain. daripada organisma hidup.
berasal daripada bukan benda hidup seperti mineral.
mengandungi kumpulan hidroksil.
menghasilkan sabun.
berbanding dengan getah asli.
1
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KESAN ALKOHOL KEPADA MANUSIA
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PROSES PENYEDIAAN ALKOHOL DALAM MAKMAL
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AKTIVITI SEBATIAN KARBON
Lengkapkan ruang kosong di bawah 1. Alkohol Sifat umum
,-----------------,------------ ------ dan --------------------------------- --------
iv. Penyediaan melalui proses ----------------------------Persamaan perkataan tindak balas yis ------------------------------ ------- (enzim zimase) ---------------------------- --- +-----------
v.
vi. Pengesteran Alkohol + -------------------------------------------
Asid sulfurik (mangkin)
ester + air
Kesan alkohol ke atas manusia
Kesihatan
•
•
Fungsi serebrum …………………………….. Fungsi serebelum
Sosial
- keluarga ….. …....................... …................................... ............... ... - masyarakat ………………………………….... …………………………………
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•
Organ dalaman ……………………….
2. SABUN i.Proses --------------------------------------- atau hidrolisis beralkali ialah proses pembuatan pembuatan sabun. ii.Dalam proses penyediaan sabun, --------------------- dididih bersama larutan ----------------------- yang bertindak sebagai mangkin. iii.-------------------- diguna untuk memendakkan sabun kerana ia bertindak untuk mengurangkan keterlarutan sabun.
Tindakan pencucian sabun
Molekul sabun terdiri daripada dua bahagian
Kepala (Kumpulan __________) Larut dalam _________
Kepala
Ekor (Rantai ________________ ) Larut dalam _________
Ekor
Sabun bertindak sebagai bahan pencuci kerana sabun :a) Dapat mengurangkan mengurangkan
______air
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Mekanisme tindakan pencucian sabun
3. Getah
GETAH
Jenis
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Perbezaan getah asli dengan getah tervulkan
Lengkapkan jadual di bawah : Jenis getah Getah asli
Kekenyalan
Kekerasan
Kesan haba
Getah tervulkan
Struktur getah asli dan getah tervulkan
Kenalpasti struktur getah di bawah :
S
S S
S
Getah ___________
S
Getah_____________
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b.
i. Apabila kain yang kotor dengan gris direndam ke dalam air sabun. Air sabun akan mengurangkan ketegangan permukaan air dan membasahi permukaan kain. ii. Bahagian ekor molekul sabun yang larut dalam gris akan melekat pada kotoran gris. iii. Bahagian kepala molekul sabun yang larut dalam air akan mengelilingi seluruh permukaan kotoran. iv. Apabila air dikocak molekulair akan menarik bahagian kepala molekul sabun manakala bahagian ekor menarik kotoran gris. v. Gris ditanggalkan ditanggalkan daripada permukaan kain sebagai titisan yang halus. vi. Titisan minyak akan terapung dalam air. (4 m)
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SEBATIAN KARBON
Soalan Objektif
1. Sabun merupakan sejenis A B C D
ester asid lemak gliserol garam asid lemak
2. Antara berikut, yang manakah merupakan persamaan bagi pembuatan sabun? A B C D
4. Antara berikut, yang manakah adalah tidak betul tentang ciri sabun yang membolehkannya bertindak sebagai bahan pencuci ? A Sabun dapat membasahi permukaan B Sabun dapat mengurangkan tegangan permukaan air C Sabun dapat membaurka minyak dalam air
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6. Proses pemvulkanan akan menyebabkan getah asli menjadi lebih kuat dan kenyal kerana A daya tarikan antara molekul polimer menjadi lebih kuat B saiz molekul polimer bertambah C wujud rangkai silang antara molekul polimer D rantai molekul polimer menjadi berbelit-belit dan tidak teratur. 7. Antara bahan berikut, yang manakah dapat menggumpalkan lateks ? I asid metanoik II ammonia III bakteria A II sahaja B I dan III sahaja C II dan III sahaja D I, II dan III 8. Antara unsur berikut, yang manakah terkandung dalam getah tervulkan ? I sulfur II plumbum III karbon A I sahaja B II sahaja C I dan III sahaja D II dan III sahaja 9. Antara pernyataan yang berikut, manakah yang benar mengenai sabun ? I Sabun ialah garam asid lemak
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C larutan ammonia D larutan glukosa SOALAN STRUKTUR
Rajah 1 1.
Raja Rajahh 1(a) 1(a) dan dan (b) (b) di di atas atas men menun unju jukka kkann perb perban andi ding ngan an dua dua jen jenis is get getah ah
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(g) Jelaskan bagaimana pemvulkanan dapat memperbaiki kelemahan getah asli.
2.
Rajah Rajah 3 di di atas atas men menunj unjukk ukkan an eksper eksperime imenn unt untuk uk men mengka gkajiji sifat sifat-sif -sifat at eta etano nol.l. (a) (a)
Apak Apakah ah sifa sifatt eta etano noll bil bilaa dic dicam ampu purk rkan an de deng ngan an air? air?
(b)(i) (b)(i) Apakah Apakah yang dapa dapatt dilihat dilihat pada pada kertas kertas turas turas di atas atas pembaka pembakaran ran etanol?
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Soalan Esei
1. Seorang pekebun menambahkan asid formik ke dalam lateks untuk tujuan penggumpalan. Seorang pekebun lain pula menambahkan larutan ammonia ke dalam lateks supaya lateks tidak menggumpal. Adakah nilai pH mempengaruhi penggumpalan lateks? (a)
Berdasarkan pernyataan pernyataan di atas, tulis satu hipotesis yang sesuai.
(b)
Huraikan satu eksperimen yang boleh anda jalankan di makmal untuk membuk mem buktik tikan an hipote hipotesis sis itu. itu. Hurai Huraian an and andaa he henda ndakla klahh men menga gand ndung ungii perkara berikut: (i) (ii) (ii) (iii) (iv) (v)
Tujuan eksperimen. Men enggenal pasti sti pemb mbooleh leh ubah Senarai ra radas da dan ba bahan Kaedah Penjadualan data
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Jawapan Sebatian Karbon
Soalan objektif 1D
2B
3D
4D
5A
6C
7B
8A
9A
10C
Soalan Struktur 1a) i) Jenis getah ii) Kekuatan atau kekenyalan getah iii) panjang asal getah dan pemberat b) Getah X lebih kuat dari getah Y c) Pemvulkanan getah d) Pemvulkanan getah adalah proses penukaran getah asli kepada getah yang lebih kuat. e) S
S S
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Jawapan soalan esei:
1. (a) Hipotesis: Lateks menggumpal menggumpal jika nilai pH kurang daripada 7. (1m) (b)(i). Tujuan eksperimen: Mengkaji bagaimana nilai pH mempengaruhi proses penggumpalan lateks. (1 m) (ii) P/manipulasi: Nilai pH P/ bergerakbalas: penggumpalan lateks P/malar: kuantiti lateks lateks dan kuantiti/kepekatan kuantiti/kepekatan asid dan dan alkali yang digunakan (2 m) (iii ) Senarai radas dan bahan: Bikar, rod kaca, asid hidroklorik 0.2 mol dm -3 , larutan ammonia 0.2 mol dm -3 dan lateks. (1 m) (iv)
Kaedah:
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(v)
Penjadualan data: Bikar X Y Z
Keadaan lateks Menggumpal selepas 2 jam Tidak menggumpal Menggumpal selepas 1 hari ( 1m)
(vi)
Kesimpulan: Lateks menggumpal jika pH kurang daripada 7 , iaitu apabila
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viii. Ix
Hasil dituras dan baki turasan dibiarkan sejuk. Baki turasan dibilas dengan air suling dan dikeringkan.