Pesta Sains

  • May 2020
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  • Words: 317
  • Pages: 19
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Pengertian

Contoh Percobaan

Difusi adalah peristiwa mengalirnya/berpindahnya suatu zat dalam pelarut dari bagian berkonsentrasi tinggi ke bagian yang berkonsentrasi rendah.

Menggunakan Kentang

Menggunakan Telur

Menggunakan Bunga

Alat : - Sendok pengaduk - Botol bekas/Gelas

Bahan: - Bunga sedap malam - Pewarna makanan - Glukosa / gula - Air

1. Siapkan botol atau gelas yang bersih. 2. Masukkan air hingga batang terendam. 3. Masukkan air gula. 4. Campurkan pewarna makanan. 5. Aduk air dan bahan-bahan lain hingga merata. 6. Masukkan bunga yang telah disiapkan 7. Tunggu beberapa waktu hingga kelopak bunga berubah warna.

Bunga yang telah direndam air gula dan pewarna berubah warna setelah beberapa waktu. Semakin lama proses perendaman, semakin pekat warna kelopak bunga. Hal ini disebabkan karena terjadinya proses difusi yaitu berpindahnya zat dalam pelarut yang berkonsentrasi tinggi (air yang sudah diberi pewarna) ke bagian yang berkonsentrasi rendah

ABOUT

MEANING

EXAMPLE

Difusion is a net transport of molecule from a region of higher concentration to one of lower concentration by random molecule motion.

With Potatoes

With Eggs

With Flower

Materials: -

Sedap Malam flower

-

Artificial Food Colouring

-

Sugar

-

Water

1. Prepare clean bottles or glasses 2. Pour the water into the bottles or the glasses 3. Pour the sugar into it 4. Add the food colouring into the water. 5. Stir the water and the other materials above until it mixed up 6. Put in the prepared flower 7. Finally we just need to wait for a moment until the flowers changed their colours.

The flower that had been soaked into the coloured and sweetened water will change it colours in a moment. The more the flower been soaked the more the flower will be coloured. This was caused by the diffusion which means a net transport of molecule from a region of higher concentration (the coloured and sweetened water) to one of lower concentration (the

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