Color Changing Milk Experiment

Eksperimen kali ini sebenarnya karena saya yang benar2 penasaran setelah nonton di youtube Steven Spangler. Dan ternyata Humaidah juga senang dengan hasil percobaan ini, mengagumkan. Di percobaan pertama sih agak gagal karena Humaidah gak sabar untuk mengaduk2 susu, akhirnya kita coba lagi dan saya harus menahan tahan Humaidah.. hihi … padahal udah dijelasin agar jangan bergerak2, tapi yang namanya anak 2,5 tahun, penasarannya luar biasa. Kalau anaknya lebih besar mungkin dia akan lebih menikmati eksperimen ini.

COLOR CHANGING MILKhttp://www.youtube.com/watch?v=DqrDCK9Uftk

Yang dibutuhkan hanya:

– susu cair

– sabun cuci piring

– pewarna makanan

– cotton bud

– piring

Tuang susu ke wadah atau piring lalu teteskan pewarna makanan pelan2. Siapkan cutton bud yang sudah dicelupkan satu sisinya ke dalam sabun, lalu tekan cutton bud ke dalam tetesan pewarna yang ada di susu. Dan apa yang terjadi? Warna2 tadi seolah menari di susu dan membentuk sebuah lukisan. Cantiiikk … Lalu bagaimana peristiwa ini terjadi?

Berikut penjelasan bapak Steven Spangler:

HOW DOES IT WORK?

Milk is mostly water but it also contains vitamins, minerals, proteins, and tiny droplets of fat suspended in solution. Fats and proteins are sensitive to changes in the surrounding solution (the milk).

The secret of the bursting colors is the chemistry of that tiny drop of soap. Dish soap, because of its bipolar characteristics (nonpolar on one end and polar on the other), weakens the chemical bonds that hold the proteins and fats in solution. The soap’s polar, or hydrophilic (water-loving), end dissolves in water, and its hydrophobic (water-fearing) end attaches to a fat globule in the milk. This is when the fun begins.

The molecules of fat bend, roll, twist, and contort in all directions as the soap molecules race around to join up with the fat molecules. During all of this fat molecule gymnastics, the food coloring molecules are bumped and shoved everywhere, providing an easy way to observe all the invisible activity. As the soap becomes evenly mixed with the milk, the action slows down and eventually stops. 

Try adding another drop of soap to see if there’s any more movement. If so, you discovered there are still more fat molecules that haven’t found a partner at the big color dance. Add another drop of soap to start the process again. http://www.stevespanglerscience.com/lab/experiments/milk-color-explosion 

Selamat bereksperimen yaa …

Vivi Nafisah

Advertisements

11 thoughts on “Color Changing Milk Experiment

  1. wuih ternyata emg keren yaa… tadinya aku pikir sayang bgt pake susu. tapi ternyata penjelasannya emg harus pake susu ya krn molekulnya yg spesial 🙂 . trims, nanti kyknya harus dicoba.

  2. Anak lebih besar belum tentu lebih menikmati mbak, tadi malah kacau pas sama Aca. Dia gak sabar nunggu aku pewarna, jadi diambil dan dituang (bukan ditetes). Jadinya tumpah ruah kemana-mana hihihi…Tapi seru dan amazing banget ya..

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s