Chemistry of everyday life
 In this lens I'd like to talk you about the Chemistry of daily  life. Chemistry is an exciting experimental science which lets us to understand  our world and makes our life easier. As you will read in the following articles,  chemistry is in our everyday life: in our body, at home, in the nature... in  every second of our lives!    How soap cleans?         There are substances which can be dissolved in water (salt for  example), and others that can't (for example oil). Water and oil don't mix  together, so if we try to clean an oily stain from a cloth or from the skin,  water is not enough. We need soap. Soap is formed by molecules  with a "head" which likes water (hydrophilic)  and a long chain  which hates it (hydrophobic) . Because of this  dualism, soap molecules act like a diplomat, improving the relationship between  water and oil. How? When soap is added to the water, the hydrophilic heads of  its molecules stay into the water (they like it!), while the l...