10 Examples of Chemistry in Everyday life

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If I ask you what comes to your mind the instant you hear the word CHEMISTRY, I am pretty sure you are going to envision yourself standing in a chemistry lab and holding different laboratory instruments. Is it not? But if you look closely at the world around you, infinite chemical reactions are occurring at any second. Thus, it can rightly be said that chemistry forms a large part of your daily life. Chemistry and chemical reactions are not just limited to the laboratories but also the world around you. The element carbon forms the basic unit of organic, inorganic, and organometallic compounds. Right at the moment when you go to sleep till you wake up, infinite chemical processes are taking place in each cell of your body. Even processes occur when you wake up, all your daily activities like drinking water, taking a shower, cooking your food, cleaning your car, laughing or crying are guided by different chemical processes. Let’s discuss some examples of chemistry which occur around us:

1. Body Composition

Your body is a fascinating place. Carbon and oxygen are the two most essential elements of the body. The other elements which are present in your body are nitrogen, phosphorous, hydrogen, oxygen, calcium, potassium, sulfur, magnesium, etc.

ELEMENT	PERCENTAGE IN THE BODY	FUNCTION
Oxygen (O)	65	• Primary solvent • Regulate temperature & osmotic pressure
Carbon (C)	18	• Energy source • Building blocks of the body
Hydrogen (H)	10	• Present in water and all organic molecules
Nitrogen (N)	3	• Found in proteins and nucleic acids
Calcium (Ca)	1.5	• Critical for muscle contraction
Phosphorous (P)	1.0	• Acts as a buffer • Provides strength and structure to bones and teeth
Potassium (K)	0.35	• Crucial electrolyte • Helps in transmission of nerve impulse • Regulates heartbeat
Sulfur (S)	0.25	• Renders shape to the proteins which aid in proper functioning of proteins
Sodium (Na)	0.15	• Important electrolyte for regulating the amount of water • Helps in nerve signaling
Magnesium (Mg)	0.05	• Required in more than 300 biochemical reactions • Builds muscle and bones • Chief cofactor in many enzymatic reactions
Iron (Fe)	0.006	• Help in blood production
Copper (Cu), Zinc (Zn), Selenium (Se), Molybdenum (Mb), Fluorine (F), Iodine (I), Manganese (Mn), Cobalt (Co)	Total is less than 0.70	• Copper is a micronutrient for the growth and development, and also essential for various metabolic functions • Zinc plays an important role in cell growth, cell division, wound healing, and the breakdown of carbohydrates • Selenium protects the body from oxidative damage • Molybdenum removes toxins from metabolism of sulfur containing amino acids • Fluorine is responsible for mineralization and formation of tooth enamel • Iodine is essential for formation of thyroid hormones • Manganese helps in the formation of connective tissues, bones, blood-clotting factors, sex hormones in addition to being critical in fat and carbohydrate metabolism, calcium absorption, and blood sugar regulation
Lithium (Li), Strontium (Sr), Aluminium (Al), Silicon (Si), Lead (Pb), Arsenic (As), Vanadium (V), Bromine (Br)	Present in trace amounts	• Lithium is essential for maintaining neurological health • Strontium aids in bone formation and prevent bone loss; the radioactive form of strontium can also kill some cancer cells • Aluminum is responsible for chromatin compaction • Silicon helps in promoting firmness and strength in arteries, connective tissues, tendons, skin, and eyes • Vanadium plays a role in metabolizing enzymes

2. Chemistry of Emotions

Whenever you are feeling happy, sad, ecstatic, relaxed, or stressed, there are many chemical reactions taking place in your body. It is because of the chemical messengers called neurotransmitters released in the brain that you can fall in love and cry rivers because of heartbreak.

3. Chemistry in Food Production

Plants produce food for themselves through photosynthesis; which is a complex chemical reaction in itself. The chemical reaction that takes place in photosynthesis is the most common and vital chemical reaction. Animals also release energy for carrying out daily activities through similar respiratory chemical reactions.

6 CO₂ + 6 H₂O + light → C ₆H₁₂O₆ + 6 O₂

4. Chemistry in Hygiene

Right before you consume your food, you make it a point to wash your hands with soap. Isn’t it? The cleaning action of soap is based on its ability to act as an emulsifying agent. Soaps are fatty acids salts of sodium or potassium; produced by a chemical reaction called saponification. Soaps interact with the grease or oil molecule, which, in turn, results in a cleaner surface.

5. The Chemistry of an Onion

Ever wondered why you shed tears while chopping an onion? This also happens because of the underlying chemistry concepts. As soon as you slice an onion, sulfenic acid is formed from amino acid sulfoxides. Sulfenic acid is responsible for the volatile gas, propanethiol S-oxide, that stimulates the production of tears in the eyes.

6. Chemistry in Baking

Who does not like to eat fluffy freshly baked bread? Baking soda is an efficient leavening agent. The addition of baking soda to food items before cooking leads to the production of carbon dioxide (CO2); which causes the foods to rise. This whole process of rising of baked good is called chemical leavening.

7. Chemistry in Food Preservatives

In case you ever read the ingredients on the bottle of ketchup, jams or pickles, you might be surprised to see a never-ending list of chemicals. What are they? These chemicals are called food preservatives; which delay the growth of microorganisms in foods. The chemical food preservatives not only prohibit the growth of bacteria, virus, fungi but also hinder the oxidation of fats, which is responsible for making the foods rancid. The most common chemical food preservatives are sodium benzoate, sorbic acid, potassium sorbate, calcium sorbate, sodium sorbate, propionic acid, and the salts of nitrous acid.

8. Chemistry in Digestion

The moment you put food in your mouth, a number of different chemical reactions start in your digestive tract. Saliva contains the enzyme amylase, which is responsible for breaking down carbohydrates, the stomach starts producing hydrochloric acid, the liver releases bile and the list of compounds released during digestion goes on. How do they work? All these enzymes undergo chemical reactions so that proper digestion, as well as assimilation of the food, occurs.

9. The Working of a Sunscreen

Before going out on a sunny day, you make it a point to wear sunscreen. Even the principle, behind the working of a sunscreen, has a chemistry background. The sunscreen uses a combination of organic and inorganic compounds to act as a filter for incoming ultraviolet rays. Sunblocks, on the other hand, scatter away UV light; so that it is unable to penetrate deep into the skin. Sunblocks contain complex chemical compounds like zinc oxide or titanium oxide, which prevent the UV rays to invade deeper into the skin.

10. Chemistry in Rust Formation

With time, your iron instruments start developing an orange-brown flaky coating called rust. The rusting of iron is a type of oxidation reaction. The atoms in the metal iron undergo oxidation and reduction; causing rusting. The formation of verdigris on copper and the tarnishing of silver are also the other everyday examples of chemical reactions. The chemical equation underlying rusting is:

Fe + O₂ + H₂O → Fe₂O₃. XH₂O