Page 73 - APS(2022)_TG1 _Edisi Guru

Sains
ingkata
Bab 2
n 1
T
Sains Tingkatan 1 Bab 2

T arikh:
Tarikh:
EKSPERIMEN 2.8 Karbon Dioksida Diperlukan untuk Fotosintesis
Wajib Carbon Dioxide is Needed for Photosynthesis Pendekatan inkuiri
Tujuan Menunjukkan karbon dioksida diperlukan untuk fotosintesis
Aim To show that carbon dioxide is needed for photosynthesis
Pernyataan Adakah karbon dioksida diperlukan untuk fotosintesis?
BAB
BAB
Masalah Is carbon dioxide needed for photosynthesis?
Problem statement
2
2
Hipotesis Karbon dioksida diperlukan untuk fotosintesis
Hypothesis
Carbon dioxide is needed for photosynthesis
Pemboleh Ubah (a) yang dimanipulasikan : Kehadiran karbon dioksida
Variables
that is manipulated Presence of carbon dioxide
(b) yang bergerak balas : Kehadiran kanji
that is responding Presence of starch
(c) yang dimalarkan : Jenis daun, jumlah air

that is kept constant Type of leaf, quantity of water

Bahan Tanaman pasu, larutan iodin, alkohol dan larutan natrium hidroksida
Materials Potted plants, iodine solution, alcohol and sodium hydroxide solution

Radas Bikar, penunu Bunsen, tabung uji, rod kaca, kasa dawai, tungku kaki tiga, jubin putih, penitis,
Apparatus forseps, spatula, serkup kaca dan kepingan kaca
Beakers, Bunsen burner, test tube, glass rod, wire gauze, tripod stand, white tile, dropper, forceps, spatula, bell jar and
glass piece

Tip Praktikal
Larutan natrium hidroksida merengsa. Elakkan daripada menghidunya.
Sodium hydroxide solution are irritant. Avoid inhaling it.

Serkup kaca
Bell jar

Tanaman pasu
Potted plant

Video

Larutan natrium hidroksida
Sodium hydroxide solution
Kepingan kaca
S Glass piece T
Rajah (a) / Diagram (a)

Prosedur 1. Simpan pasu S dan T dalam keadaan gelap selama dua hari.
Procedure Keep pot S and T in the dark for two days.
2. Sediakan susunan radas seperti dalam Rajah (a).
Set up the apparatus as shown in Diagram (a).
3. Letakkan pasu S dan T di bawah cahaya matahari selama tiga jam.
Place pot S and T under the sunlight for three hours.
4. Petik daun dari pasu S dan T dan jalankan ujian kanji.
Pluck the leaves from both pots S and T and test for the presence of starch.

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enerbitan P
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© Penerbitan Pelangi Sdn. Bhd.
elangi S
dn. B
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hd.
02 APS SAINS TG1.indd 40 21/07/2021 8:37 AM