What are the applications of chemistry in our daily life?
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Answer:
Let’s find out the Chemistry in our everyday life:
Your body- Your body is mostly water which is hydrogen and oxygen. Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulphur, sodium, chlorine, and magnesium. All are necessary to life.
Your emotions- The emotions that you feel are a result of chemical messengers, primarily neurotransmitters. Love, jealousy, envy, infatuation and infidelity all share a basis in chemistry. The sweaty palms and pounding heart of infatuation are caused by higher than normal levels of norepinepherine. Meanwhile, the ‘high’ of being in love is due to a rush of phenylethylamine and dopamine.
Soaps and detergents- Everyday while washing our clothes we use soaps and detergents. These soaps and detergents are made of chemical ingredients. Soaps are sodium or potassium fatty acids salts, produced from the hydrolysis of fats in a chemical reaction called saponification. Each soap molecule has a long hydrocarbon chain, sometimes called its ‘tail’, with a carboxylate ‘head’. In water, the sodium or potassium ions float free, leaving a negatively-charged head. Soap is an excellent cleanser because of its ability to act as an emulsifying agent.An emulsifier is capable of dispersing one liquid into another immiscible liquid. This means that while oil (which attracts dirt) doesn’t naturally mix with water, soap can suspend oil/dirt in such a way that it can be removed.
Onions- As harmless as they look, these when cut can make you cry rivers. There is a chemical reason behind this water. When you cut an onion, you break cells, releasing their contents. Amino acid sulfoxides form sulfenic acids. Enzymes that were kept separate now are free to mix with the sulfenic acids to produce propanethiol S-oxide, a volatile sulfur compound that wafts upward toward your eyes. This gas reacts with the water in your tears to form sulfuric acid. The sulfuric acid burns, stimulating your eyes to release more tears to wash the irritant away. Apparently, this water helps the dirt from your eye to wash away. One useful tip you can probably pass on to your mother is that if onion is cut under running water, most of the chemicals that make your eyes water get washed away. Voila!
Ice floats on water- If ice wouldn’t float, imagine the water of a lake freezing from the bottom! Chemistry holds the explanation for why ice floats, while most substances sink when they freeze. A water molecule is made from one oxygen atom and two hydrogen atoms, strongly joined to each other with covalent bonds.