Content
- Importance
- Examples of chemical phenomena
- Chemical phenomena in industry
- The transformation of energy
- More information?
The chemical phenomena are those in which changes occur in matter, with the appearance of certain substances and the disappearance of others.
They almost always obey chemical reactions, which can be spontaneous or caused by mixing different materials and subjecting them to certain conditions of temperature, from pH, pressure, etc.
The main chemical reactions correspond to one of the following types:
- Synthesis
- Decomposition
- Addition
- Substitution
See also: Examples of Physical Phenomena
Importance
Many chemical phenomena sustain the life of living beings, as the digestion in humans and animals, the photosynthesis in plants and respiration in both.
Another very important chemical process, especially in the life of microorganisms, is the fermentation, which is usually used in the manufacture of foods such as cheeses, yogurts, wines and beers.
In fact all the growth and development of a living being it obeys chemical signals that are produced in it, sometimes stimulated by elements of the environment.
Examples of chemical phenomena
There are numerous cases of chemical phenomena or processes that include them around us, here are some:
- Wood rot
- Paper burning
- Antibiotic resistance of bacteria
- Milk that turns sour
- Disinfecting a wound with alcohol
- Using fruit salt to fight heartburn
- Burning a candle
- Blood clotting
- Muscle fatigue after intense exercise
- Death of insects by insecticides
- Obtaining Roquefort cheese
- Obtaining cider
- Obtaining yogurt
- Composting
- Ensilage
- Obtaining bioethanol from molasses
- Swollen tin cans
- Rotten egg
- Rusting of a grate
- Obtaining biodiesel from palm oil
See also: Examples of physical and chemical phenomena
Chemical phenomena in industry
Also in industry certain chemical phenomena are key. For starters, the hydrocarbon combustion like gasoline, diesel or kerosene, it feeds the machinery that handles countless industrial processes.
On the other hand, the iron and steel industry, paper, plastics, construction materials, paints, drugs, agricultural products, etc., are based on various chemical phenomena, such as alloy, the galvanization, the electrolysis and many others.
It is also based on this type of phenomenon the generation of new energy sources, like biodiesel and bioethanol.
See also: Examples of Industries
The transformation of energy
In chemical phenomena it is common for there to be transformation of energy. For example, that the chemical energy contained in the bonds of a certain molecule is transformed into electrical energy or released as heat (this occurs in exothermic phenomena, such as when hydrochloric acid is mixed with zinc), or that the light energy is captured and transformed into chemical energy.
Some chemical processes need heat To be carried out, they are called endothermic, others require the presence of catalysts or cofactors.
See also:Examples of Energy Transformation
More information?
- Examples of Chemical Changes
- Examples of Physical Changes
