Reactions In Everyday Life-Chemical Reactions

A number of chemical reactions take place around us. We see a flaky brown colored layer appearing on the surface of iron articles such as gates and car bodies. During the festival of Diwali, we light crackers that render bright light and sound. The bright light results from the burning of components such as magnesium which are used as one of the ingredients of the crackers and sparklers. In this section, we will learn about these chemical reactions.

Types of Reactions

Photosynthesis: The process of photosynthesis by which autotrophs manufacture their food is another chemical reactions. In the presence of sunlight and chlorophyll, plants manufacture glucose from carbon dioxide and water from the environment.

6CO2+6H2O———>C6H12O6 (aq) + 6O2 (g)

Photosynthesis : Chemical Reactions

Photosynthesis: Natural Reactions

Rusting: The process of oxidation (reactions in the presence of oxygen) results in the formation of a brown flaky layer over the metal surfaces such as iron. This layer is formed due to the oxidation of the top most layer to form the metal oxide which we know as rust. Similar layers are formed on other metals such as silver where a green colored layer is formed.

Fe+3O2+xH2O————->Fe3O4.xH2O

Chemical Reaction

Rusting: Chemical Reactions

Cellular Respiration:The process of respiration in humans also involves a chemical reaction. The glucose molecules undergo oxidation to produce carbon dioxide and water along with energy.

C6H12O6 (aq) + 6O2 (g) → 6CO2 (g) + 6H2O (l) + Energy

Anaerobic Respiration: When an object undergoes fermentation, the components that contain sugar or starch get converted to gases, acids, and alcohol.

C6H12O6 → 2 C2H5OH + 2 CO2

Combustion: The process of combustion involves the oxidation of a material in the presence of oxygen from the environment and heat to produce ash, smoke, and other gases.

C+O2    ———–> CO2

Chemical Reactions

Combustion

Acid- base reactions: The weak acids produced inside our mouth due to sugary foods and bacteria overnight are neutralized with the base present in toothpaste we use every day.

Acid + Base à salt + water

Similarly, the oxide layer on metallic artifacts is removed with weak acids such as vinegar. This process renders the layer of the metal clean as a fresh layer of metal is exposed.

CH3COOH+FeO———>CH3COOFe+H2O

Chemical Reactions

Acid-Base Reactions


Practise This Question

The metal and non-metal that are liquid at room temperature are ____________ and __________ respectively.