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Hand washing. How do soap and water clean your hands?
Автор: Pittsburgh Water
Загружено: 2020-06-09
Просмотров: 5303
Описание:
You probably already know that it is important to wash your hands often to stay healthy and prevent the spread of harmful germs. But do you know how the combined power of soap and water gets your hands clean? This demonstration shows a quick hand washing experiment that you can do at home with just cooking oil, soap, and tap water!
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