Sistem Koloid - Sistem Koloid A Tujuan Siswa mempelajari...

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Sistem Koloid A. Tujuan Siswa mempelajari perbedaan larutan, koloid, dan suspensi B. Landasan Teori Sistem koloid adalah suatu bentuk campuran (sistem dispersi) dua atau lebih zat yang bersifat homogen namun memiliki ukuran partikel terdispersi yang cukup besar (1 - 100 nm), sehingga terkena efek Tyndall. Bersifat homogen berarti partikel terdispersi tidak terpengaruh oleh gaya gravitasi atau gaya lain yang dikenakan kepadanya, sehingga tidak terjadi pengendapan, misalnya. Sifat homogen ini juga dimiliki oleh larutan, namun tidak dimiliki oleh campuran biasa (suspensi).
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C. Alat dan Bahan Bahan : Alat : - Gula pasir - Gelas kimia - Terigu - Pengaduk - Susu kental manis - Corong - Tepung kanji - Kertas saring - Serbuk deterjen - Sendok makan - Kopi - Serbuk belerang - Aquades D. Prosedur kerja 1. Isilah 6 gelas kimia masing-masing dengan 50 mL air suling. 2. Tambahkan 1 sendok makan gula pasir, terigu, kopi, susu kental manis, kanji, detergen, belerang, dan urea ke dalam 1 gelas kimia per satu bahannya 3. Aduklah dengan pengaduk masing-masing campuran hingga homogen.
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  • Spring '13
  • lupa

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