Maya Ellison
The classification of plastic as either organic or inorganic is a complex issue, depending on the definition used. In chemistry, organic compounds refer to chemicals containing carbon atoms, which form the backbone of most plastic polymers. Therefore, plastics are typically classified as organic polymers within the field of chemistry. However, in common usage, organic often refers to something relating to or derived from living matter, which does not include most plastics as they are man-made and not found naturally. From a waste perspective, organic materials are biodegradable, capable of being decomposed by bacteria or other living organisms, while inorganic materials, including some plastics, take a long time to decompose and are challenging to dispose of. Thus, the classification of plastic as organic or inorganic depends on the context and the specific definition being applied.
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What You'll Learn
Plastic is considered organic in chemistry
The term "organic" has multiple definitions. While plastic fits under some of these definitions, it does not fit all. In chemistry, plastic is considered organic because it is made up of hydrogen-carbon bonds. The molecules in plastic come from fossil fuels, usually natural gas, and carbon is the spine of most plastic polymers. However, the term "organic" in the food industry would not include most plastics because they are man-made and not found in nature.
In the context of chemistry and industry, plastics are classified as artificial organic polymers. This classification is based on their composition, which predominantly consists of carbon and hydrogen, characteristic of organic compounds. The versatility of carbon allows it to bond with itself and other elements, resulting in a wide array of substances, including plastics.
Organic polymers, such as plastics, are a diverse chemical family. They are lightweight, durable, and possess various properties that have made modern life much easier and more sanitary. For example, polystyrene containers are popular for food storage because they are lightweight and can keep food warm or cool.
However, the durability of plastics can also be a drawback. Since plastics are not readily biodegradable, they persist in the environment for extended periods, contributing to pollution. This issue arises because plastics are not decomposed by living organisms, as they have only existed for a relatively short time, and organisms have not evolved to process them.
While most plastics are organic, some exceptions exist. Certain carbon compounds, like carbon dioxide (CO2), are considered inorganic because they do not conform to the traditional definitions of organic compounds. Nonetheless, these exceptions typically do not include everyday plastics, which are generally categorized as organic due to their composition and source materials.
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Plastic is inorganic in the food industry
The term "organic" has multiple definitions. In chemistry, plastic is considered organic because it is made up of hydrogen-carbon bonds. However, in the food industry, the term "organic" has a different meaning, referring to food that is produced without the use of synthetic pesticides or fertilisers. Therefore, in the context of the food industry, plastic is inorganic as it is not derived from living matter and is not something that is eaten.
Plastics are synthetic polymers, primarily consisting of carbon-based molecules, which categorises them as organic materials in a chemical sense. The carbon atoms in plastic form covalent bonds with other carbon atoms or different elements such as hydrogen, oxygen, nitrogen, sulphur, or silicon. This unique structure gives plastics their durability, flexibility, and resistance to corrosion, making them useful in various industries, including food packaging.
In the food industry, plastic is commonly used for packaging and plays a significant role in the food system. However, plastic packaging is the largest source of plastic waste globally, with a widely documented impact on the environment, particularly marine life. The issue is further exacerbated by the fact that plastic is non-biodegradable, as there are limited organisms capable of decomposing it. This has led to the accumulation of plastic waste in landfills and oceans, causing pollution and potentially impacting the food system and human health.
While plastic is considered organic in a chemical sense, it is important to distinguish its inorganic nature in the food industry. The term "organic" in this context refers to food produced without synthetic chemicals and genetically modified organisms (GMOs). Plastic is not derived from living matter and is not consumed as food, therefore it does not fall under the definition of "organic" in the food industry.
In conclusion, while plastic may be considered organic in chemistry due to its molecular structure, it is inorganic in the food industry because it does not meet the criteria of what is typically considered "organic" in this specific context. The distinction between the chemical definition of organic and its usage in the food industry is crucial to understanding why plastic is classified as inorganic when it comes to food-related applications.
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Plastic is not biodegradable
In chemistry, plastics are considered organic compounds because they are made from carbon chains containing hydrogen atoms. However, in common usage, the term "organic" is often used to mean "natural" or derived from living matter. By this definition, plastics are inorganic because they are synthetic and do not occur naturally. This is also the definition that is most relevant to the question of biodegradability.
Plastics are not biodegradable because they are not recognized by the enzymes in microorganisms that break down biodegradable materials. Biodegradation occurs when a series of organisms feed on and decompose a substance, but plastics have only existed for about a hundred years, which is not long enough for organisms to evolve that can process them.
Even so-called "biodegradable plastics" are not a solution to plastic pollution. They are intended for short-lived use but often stay in the environment for a very long time before they actually degrade. In natural conditions, they may biodegrade slowly or not at all, instead fragmenting into microplastics or even smaller nanoplastics. These tiny particles can infiltrate human bodies through the skin, food, and the air we breathe.
Because plastic is not biodegradable, it contributes to pollution and the release of toxic chemicals into the environment. Plastic trash can break down into smaller pieces that are ingested by animals, fish, and birds, and it can also release harmful chemicals into the soil, water, and air when it is burned.
To reduce the environmental impact of plastic, it is important to switch to more sustainable options such as refillable containers and reusable packaging, reduce plastic use, boost reuse, and recycle plastic as a last resort.
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Plastic is a mixture of organic and inorganic compounds
The term "organic" has multiple definitions. In chemistry, organic compounds refer to molecules containing carbon-hydrogen bonds, typically forming carbon chains or rings. Carbon is a versatile element that forms the basis of billions of compounds that are vital to life. In this sense, plastic is considered organic because it is made of hydrocarbons, or chains of hydrogen and carbon atoms.
However, the term "organic" in the food industry has a different meaning, referring to produce that is derived from living matter and does not use synthetic pesticides or fertilisers. In this context, most plastics would not be considered organic because they are man-made and not found naturally in nature.
Furthermore, while organic waste is biodegradable, plastics are generally not readily biodegradable, leading to their classification as "inorganic" in common usage. The decomposition of organic waste is facilitated by microorganisms, whereas inorganic waste takes a long time to disintegrate because it is not affected by microorganisms in the same way.
Therefore, depending on the definition of organic, plastic can be considered both organic and inorganic. In chemistry, plastic is classified as an organic compound due to its carbon-based structure. However, in common usage, plastic is often referred to as inorganic because it is not readily biodegradable. Additionally, plastic may contain inorganic compounds such as titanium dioxide and calcium carbonate, which are added to improve performance or aesthetics.
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Plastic is a carbon-based molecular structure
The term "organic" has multiple definitions, and plastic fits under some of these definitions but not all. In chemistry, plastic is considered organic because it is made up of hydrogen-carbon bonds. The molecules of plastic come from fossil fuels, usually natural gas, and are composed of carbon atoms connected to one another in a chain-like structure, with mostly or exclusively hydrogen atoms attached to the carbon atoms. This carbon-based molecular framework categorizes plastics as organic materials.
However, some plastics do not fit this definition, as they are made up of carbon and other elements such as chlorine. For example, silicone breast implants or silicone hydrogel for optical lenses are plastics produced from silicon atoms.
In the realm of chemistry and industry, plastics are normally classified as artificial organic polymers. This classification stems from their composition, which predominantly consists of carbon and hydrogen, characteristic of organic compounds. The commercial categorization of plastics also considers elements such as the polymer's foundation, shape, and properties.
Plastics are usually divided into two broad categories based on their behavior under heat: thermoplastics and thermosets. Thermoplastics, such as polyethylene and polyvinyl chloride, melt upon heating and can be remolded, making them versatile for manufacturing processes. Thermosets, such as epoxy resins, undergo a chemical change when heated, becoming rigid and non-malleable.
Additionally, the biodegradability and environmental impact of plastics are crucial considerations in their classification. While some plastics do biodegrade, they are generally not readily biodegradable, leading to their association with the term "inorganic." This distinction arises because the decomposition of plastics depends on a series of organisms feeding on their components, and in the case of plastics, there are not many organisms capable of doing so.
In summary, plastics are considered organic materials in a chemical sense due to their carbon-based molecular structure. However, they can also contain inorganic components, and their classification as organic or inorganic depends on the specific definition and context being used.
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Frequently asked questions
In chemistry, plastics are considered organic compounds as they are made from carbon-based compounds. Specifically, plastics are organic polymers, which are large molecules (poly) made from many smaller molecules (mer). However, in everyday use, the term 'organic' is often used to mean natural or derived from living matter, and in this sense, plastic is inorganic as it is man-made and not found in nature.
Inorganic materials are derived from minerals, while organic materials come from living organisms such as plants or animals. Organic materials are biodegradable, meaning they can be decomposed by bacteria or other living organisms. Inorganic materials are not biodegradable and can take a very long time to decompose.
Plastic is usually considered inorganic in everyday use because it is not found in nature and needs to be made or synthesized from petrochemicals or other natural chemicals. It also does not readily biodegrade as there are not many organisms that can decompose it.
Examples of organic waste include paper, cardboard, and food remains. Inorganic waste includes aluminum cans, spoons, plastics, and glass.
