Synthetic Technology

Synthetic Technology

Middle School

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Learning Objectives

• Differentiate between natural and synthetic materials and their origins.

• Explain how a material’s structure affects its properties and functions.

• Describe how chemical reactions create new materials with different properties.

• Analyze how society’s needs drive the creation of new synthetic materials.

• Evaluate the impact of synthetic materials on people and the environment.

Key Vocabulary

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Natural Resource

These are useful materials that we find in nature and get from the Earth to make things.

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Natural Material

Natural materials are any type of matter that comes directly from plants, animals, or the ground.

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Synthetic Material

A synthetic material is a man-made substance created through a chemical reaction to form something new.

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Chemical Process

A chemical process is a specific method used to intentionally change the structure of a substance.

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Societal Impact

This refers to the overall effect that something has on people, communities, and society as a whole.

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Property

In science, a property is a special quality or characteristic that belongs to a particular substance.

Key Vocabulary

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Reactant

A starting substance in a chemical reaction that undergoes change to form new substances.

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Product

A new substance that is formed as a result of a chemical reaction.

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Monomer

A small, single molecule that serves as a building block for a larger polymer chain.

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Polymer

A large, long-chain molecule that is made up of many smaller repeating monomer units.

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Polymerization

The chemical process of joining many small monomer molecules together to form a large polymer.

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What Are the Properties of Materials?

• All materials have unique physical and chemical properties determining their specific functions.

• ​Key properties include hardness, flexibility, conductivity, and reactivity with other substances.

• For instance, good electrical conductors make great wires for our electronic devices.

• A material’s atomic structure makes some poor heat conductors, ideal for insulation.

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Multiple Choice

What is the primary role of a material's physical and chemical properties?

• They determine the specific functions of the material.

• They change the material's color and shape.

• They make all materials behave in the same way.

• They only affect a material's atomic structure.

Multiple Choice

What is the relationship between a material's atomic structure and its properties?

• It explains why some materials are good for insulation while others are good for wires.

• It determines if a material is hard or flexible.

• It only affects the chemical properties of a material.

• It makes all materials good electrical conductors.

Multiple Choice

A company needs to design a handle for a hot cooking pot. Which type of material would be the best choice for this function?

• A material that is a poor conductor of heat.

• A material that is a good conductor of electricity.

• A material that is highly flexible.

• A material that is very hard.

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Natural vs. Synthetic Materials

Natural Materials

• These materials are sourced directly from the natural world, such as plants, animals, or the ground.

• They are often used either in their original form or after undergoing some very minimal processing.

• Examples include common materials like wood and cotton, or resources like metal ores and crude oil.

Synthetic Materials

• These are materials that are not found in nature and are created by humans.

• They are derived from natural resources that undergo a significant chemical process in a lab or factory.

• This process alters their structure to create a new material, such as turning petroleum into plastic.

Multiple Choice

What is the primary difference between natural and synthetic materials?

• Natural materials are sourced from nature, while synthetic materials are created by humans.

• Natural materials are always soft, while synthetic materials are always hard.

• Natural materials are rare, while synthetic materials are common.

• Natural materials are used for clothing, while synthetic materials are used for building.

Multiple Choice

What is the relationship between natural resources and the creation of synthetic materials?

• They are made from natural resources that have been chemically changed.

• They are found in nature but are difficult to find.

• They are mixtures of different types of natural materials.

• They are natural materials that have been polished or cleaned.

Multiple Choice

Crude oil, a natural resource, is processed in a factory to create plastic. Based on this process, how would plastic be classified and why?

• It is a synthetic material because it was made by chemically altering a natural resource.

• It is a natural material because it originally came from crude oil.

• It is a natural material because it is a liquid, like water.

• It is a synthetic material because it is a useful product for humans.

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The Chemistry of Creating Synthetic Materials

• Synthetic materials are the products of controlled chemical reactions.

• Reactants, the starting substances, rearrange atoms to create new products.

• A key process is polymerization, which joins small molecules called monomers.

• These monomers form a long chain called a polymer with unique properties.

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Multiple Choice

What defines a material as being synthetic?

• They are the products of controlled chemical reactions.

• They are materials that are found directly in nature.

• They are substances that cannot be changed by chemistry.

• They are the result of physically mixing substances together.

Multiple Choice

How does the process of polymerization contribute to creating synthetic materials?

• It is a process that joins small monomer molecules into a long polymer chain.

• It is a reaction that breaks large polymer chains into small monomers.

• It is a method for separating reactants from products without a reaction.

• It is the process of atoms rearranging themselves into reactants.

Multiple Choice

If a scientist combines reactants called monomers and a chemical reaction occurs, what is the best explanation for why the resulting product has completely new properties?

• The atoms in the monomer reactants have rearranged to form a new polymer product with different properties.

• The monomers have simply been mixed together, but no new substance has been created.

• The polymer was already hidden inside the monomers and the reaction released it.

• The properties of the reactants and products in a chemical reaction are always identical.

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Societal Need for Synthetic Materials

• Human and societal needs and desires drive the creation of new synthetic materials.

• Factors like climate, resource availability, and economics can influence these specific needs.

• This leads to developing new medicines, alternative fuels, or lightweight construction materials.

• The goal is to create materials that solve problems or improve our lives.

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Multiple Choice

What is the primary goal behind the creation of new synthetic materials?

• To solve problems and meet the needs of society

• To conduct scientific experiments for curiosity's sake

• To replace all-natural materials with cheaper versions

• To discover materials that already exist in nature

Multiple Choice

What is the relationship between factors like climate or resource availability and the development of synthetic materials?

• They are the direct result of creating new materials.

• They help determine the specific problems that need to be solved.

• They only affect the final cost of the synthetic materials.

• They have little to no impact on the invention process.

Multiple Choice

If a country has very few natural energy resources and faces high fuel costs, which synthetic material would its society most likely be driven to develop?

• A new, efficient, and affordable alternative fuel source

• A stronger type of plastic for making consumer electronics

• A lightweight material for building taller skyscrapers

• A new medicine to treat common illnesses

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Impact of Synthetic Materials on Society

Positive Impacts

• Synthetic materials help in the development of new, life-saving medicines and devices.

• They can be used to create durable and affordable housing materials like concrete.

• New technologies, including the parts needed for smartphones, rely on these materials.

Negative Impacts

• The production of synthetic materials can use up important and limited natural resources.

• Getting rid of synthetic materials can cause pollution if not done correctly.

• Plastic waste from synthetic products is a major problem for the Earth’s oceans.

Multiple Choice

Which statement best describes the overall impact of synthetic materials on society?

• They have both beneficial and harmful effects on people and the environment.

• They are only used for creating new technologies like smartphones.

• They only cause problems for the environment, such as pollution.

• They are primarily used to make life-saving medicines.

Multiple Choice

Which of the following is an example of a positive outcome of developing synthetic materials?

• The creation of affordable housing materials.

• The use of limited natural resources.

• The increase of plastic waste in oceans.

• The creation of pollution from improper disposal.

Multiple Choice

A company develops a new synthetic material to build durable, affordable houses for a community. Based on the potential trade-offs, what is a likely negative consequence the community should consider?

• Producing the material may use up limited natural resources.

• The new material will likely be used to make smartphones.

• The houses built with the material will not be very durable.

• The material could be used to develop new, life-saving medicines.

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Common Misconceptions

Misconception	Correction
Synthetic materials are created 'from scratch.'	All synthetic materials are derived from natural resources.
'Natural' is always better or safer than 'synthetic.'	Synthetics can be designed for superior properties like durability.
Synthetic materials are always bad for the environment.	Some can help create cleaner energy or reduce food waste.

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Summary

• Synthetic materials originate from natural resources but are transformed by chemical reactions.

• A material's properties are based on its structure and determine its function.

• Polymerization is a chemical process that links monomers to form long polymer chains.

• New materials are developed to meet societal needs and can impact society and the environment.

Poll

On a scale of 1-4, how confident are you in describing how synthetic materials are developed and how they impact society?

• 1

• 2

• 3

• 4