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Everything from cleaning cloths and insoles to washing powder and bandages – they all seem to employ the element in some way.Unfortunately, silver can’t really perform miracles. But it can be used quite effectively to control bacteria.There are basically two ways to brew low-alcohol beer.Either you lower the percentage of alcohol in the beverage during the brewing process, or afterwards.And in their turn, fibrils are made up of chains of protein molecules - mostly the tough structural protein keratin - that are twisted together and attached to one another with chemical bridges made of sulfur or hydrogen atoms.If you want to change it, then you first have to dissolve the bonds. MP3 (3.2 MB) Alcohols are a group of diverse organic compounds, among them ethanol, methanol, propanol and butanol.MP3 (3.4 MB) Hard water - sounds like white and flaky showerheads, encrusted water cookers, or stopped-up pipes.Although the clear water that comes jetting out of the faucet might look soft and innocent, it contains substances that can turn pretty hard.

It is created when you burn substances that contain carbon - for example, fossil fuels or coal - but is also an end product of respiration in animals.MP3 (3.3 MB) In the old days, sponges only came from the sea.For millennia, brave divers risked life and limb to bring them back to the surface.Or you can roll together the fluffy ice crystals that fall from the sky into a snowman. And if the coolant freezes when the temperature drops below zero degrees Celsius, then you have a serious problem.MP3 (4.1 MB) There have been plenty of attempts all over the world to influence the weather with chemical tricks.

It is created when you burn substances that contain carbon - for example, fossil fuels or coal - but is also an end product of respiration in animals.MP3 (3.3 MB) In the old days, sponges only came from the sea.For millennia, brave divers risked life and limb to bring them back to the surface.Or you can roll together the fluffy ice crystals that fall from the sky into a snowman. And if the coolant freezes when the temperature drops below zero degrees Celsius, then you have a serious problem.MP3 (4.1 MB) There have been plenty of attempts all over the world to influence the weather with chemical tricks.When you breathe, carbon in your body reacts with oxygen from the air, combining to form carbon dioxide. We in turn absorb these carbohydrates when we eat the plants.