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What is a Chemical?

Ken Black
Ken Black

In its most basic form, a chemical is an element, in that it has a specific molecular composition and may be produced by or used during a natural chemical process. An element is a chemical substance made of specific kinds of atoms that cannot be broken down any further; in short, elements are the purest forms of chemicals known to man. When multiple chemicals combine, a chemical compound is formed, which exists in order to combine different types of elements, and therefore, different reactions.

Purpose

There are around 150 chemicals in gasoline.
There are around 150 chemicals in gasoline.

Perhaps the main use of chemicals is to promote and enhance a greater quality of life for not only the human race, but countless other species as well, as they allow for the creation of modern day inventions. Anything made up of matter, or anything that is considered a solid, liquid, or gas, is made up of chemicals; this means that nearly everything a person uses throughout the day is composed of chemicals. Chemicals are used as a basic function of everyday life; they are combined in such ways as to create many commonly used substances—from the water one drinks to the gasoline that provides an automobile its energy.

Chemicals include the fluids used to make sure vehicles run properly.
Chemicals include the fluids used to make sure vehicles run properly.

Just 100 years ago, many of the chemicals being used today did not exist, at least not in a known form. This includes the chemicals needed to produce things like modern medicines and cleaning supplies. In addition to the chemicals already being used in the modern world, more chemicals are coming into existence every day.

Combining Chemicals

In order to produce chemical compounds, it is first necessary to come up with a chemical formula. This formula is merely a list of atoms that includes the types of atoms and the number of those specific atoms needed to form a molecule of the substance in question. Usually, this is accomplished by listing the type of atom first, followed by the number of atoms needed for that particular compound.

For example, consider one of the most common chemical formulas known to the world H2O. This is two atoms of hydrogen combined with one atom of oxygen. The result is one of the most basic, life-sustaining chemicals known to mankind—water.

Water, made up of hydrogen and oxygen, is the most common chemical formula in the world.
Water, made up of hydrogen and oxygen, is the most common chemical formula in the world.

The order of elements in the formula is usually determined by the Hill system, which states that all carbon atoms will be listed first, hydrogen atoms second, then all other remaining atoms alphabetically. The exception to this is ionic compounds, which will always list the positively charged ion first. This is the case for NaCl, the formula for salt.

Side Effects

Chemists are responsible for understanding how different chemicals will react with each other.
Chemists are responsible for understanding how different chemicals will react with each other.

However, while a chemical can be a good thing, certain kinds of chemicals can also have negative effects both on people and the environment. For example, some chemicals can pose serious risks if they are ingested, some chemicals are believed to cause cancer, and some chemicals are known to be hazardous to the atmosphere. Many websites and books are devoted to educating the public about the potentially harmful side effects that can arise from chemicals.

Chemists, or those who work with chemicals, are charged with understanding how different chemicals will react with each other. Without this knowledge, it is very possible that experimenting with certain chemicals can lead to catastrophic results.

Chemistry

Chemicals have specific molecular compositions.
Chemicals have specific molecular compositions.

The study of chemical substances is called chemistry. Often, the most basic forms of chemistry classes begin in high school and then continue on throughout higher learning institutions. Those who need a background in chemistry include doctors, pharmaceutical researchers, and even food and synthetic food developers.

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Discussion Comments

claude1976

If someone says you need to add lye, are there different types of lye for chemical processes?

anon131026

how do we use chemical formulas in life? or why do we use this in life?

anon44744

What is a natural solution for cleaning a bathroom and room that has been used by a person with VRE?

anon42033

Is linseed oil effective for muscle pain?

anon38671

i was wondering if styroform balls, used for floatation purposes for a pier in a fresh water lack, eventually hold water or basically get waterlogged?

If so, is there anything that is biodegradable that can be sprayed on them to bring them back to life?

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    • There are around 150 chemicals in gasoline.
      By: sint
      There are around 150 chemicals in gasoline.
    • Chemicals include the fluids used to make sure vehicles run properly.
      By: designsstock
      Chemicals include the fluids used to make sure vehicles run properly.
    • Water, made up of hydrogen and oxygen, is the most common chemical formula in the world.
      By: robert
      Water, made up of hydrogen and oxygen, is the most common chemical formula in the world.
    • Chemists are responsible for understanding how different chemicals will react with each other.
      By: Kirill Kedrinski
      Chemists are responsible for understanding how different chemicals will react with each other.
    • Chemicals have specific molecular compositions.
      By: Tyler Olson
      Chemicals have specific molecular compositions.
    • Chemicals are used to create new medications.
      By: nandyphotos
      Chemicals are used to create new medications.