

SAINS BAB 5 : AIR DAN LARUTAN
Presentation
•
Science
•
7th Grade
•
Hard
Suzanna Abd Aziz
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6 Slides • 0 Questions
1
SAINS BAB 5 : AIR DAN LARUTAN
(5.1 Sifat fizik air)
CIKGU SUZANNA ABD AZIZ

2
MURID DAPAT:
Berbicara dan berkomunikasi mengenai air
Berkomunikasi mengenai proses penyejatan air dalam kehidupan harian
3
Sifat fizik air
Tidak berwarna
Tiada rasa
Takat beku 0oc
Takat didih 100oc
4
Kompisisi air
Terdiri daripada gabungan oksigen dan hidrogen yang bergaung secara kimia
Sebatian air dapat dipisahkan melalui kaedah elektrolisis
Satu molekul air terdiri daripada 1 atom oksigen dan 2 atom hidrogen (H2O)
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Kesan bendasing terhadap takat didih dan takat beku
Takat didih akan meningkat ( lebih dari 100oc)
Takat beku akan berkurang ( kurang dari 0oc)
6
Penyejatan air
Berlaku dipermukaan air sahaja
Dipengaruhi oleh kelembapan udara, suhu persekitaran, luas permukaan air terdedah dan pergerakan udara
Contoh aplikasi : ikan kering, menyidai kain di ampaian, garam laut yang diperoleh dari air laut
SAINS BAB 5 : AIR DAN LARUTAN
(5.1 Sifat fizik air)
CIKGU SUZANNA ABD AZIZ

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