What is a chemical reaction?

Chemical reactions occur when the atomic bonds that make up molecules are broken and rearranged.

What is a physical change?

A physical change occurs when the size, shape, or appearance of a substance changes but its atomic makeup remains the same.

A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs. A mixture can usually be separated back into its original components.

How do you know if a chemical change occurs?

Chemical changes result in new material(s) being formed that have different properties than those that were combined to make them.

Can physical changes be reversed?

For the most part, physical changes are reversible. However, some physical changes are very difficult or impossible to reverse, such as breaking a rock into smaller pieces.

Can chemical changes be reversed?

For the most part, chemical changes are not reversible because the atoms that make up the molecules have been rearranged to form new substances.

What are natural resources?

Natural resources are resources that exist without humans having any role in their formation.

How are plastics formed?

Plastics are formed from chemicals that are mixed together and chemically react to create carbon-based molecule chains called monomers. A variety of different chemicals can be used to make plastics, but the most common one today is petroleum.

Are synthetic materials useful?

Yes, we use synthetic materials for many things, including medicines, fabrics, containers, building materials, and fuels.

Can synthetic materials cause problems for society?

Yes, some synthetic materials, such as plastics, take a very long time to decompose. As a result, they can collect and cause pollution. It is important that these materials are recycled.

What is a chemical reaction?

Chemical reactions occur when the atomic bonds that make up molecules are broken and rearranged.

What is a physical change?

A physical change occurs when the size, shape, or appearance of a substance changes but its atomic makeup remains the same.

A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs. A mixture can usually be separated back into its original components.

How do you know if a chemical change occurs?

Chemical changes result in new material(s) being formed that have different properties than those that were combined to make them.

Can physical changes be reversed?

For the most part, physical changes are reversible. However, some physical changes are very difficult or impossible to reverse, such as breaking a rock into smaller pieces.

Can chemical changes be reversed?

For the most part, chemical changes are not reversible because the atoms that make up the molecules have been rearranged to form new substances.

What are natural resources?

Natural resources are resources that exist without humans having any role in their formation.

How are plastics formed?

Plastics are formed from chemicals that are mixed together and chemically react to create carbon-based molecule chains called monomers. A variety of different chemicals can be used to make plastics, but the most common one today is petroleum.

Are synthetic materials useful?

Yes, we use synthetic materials for many things, including medicines, fabrics, containers, building materials, and fuels.

Can synthetic materials cause problems for society?

Yes, some synthetic materials, such as plastics, take a very long time to decompose. As a result, they can collect and cause pollution. It is important that these materials are recycled.

Synthetic Materials

Q: What are synthetic materials?

A synthetic material is one in which the substances are deliberately joined together to produce a material with different characteristics. Some synthetic materials form from mixtures, but most are the result of chemical reactions.

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WHAT ARE SYNTHETIC MATERIALS?

Synthetic materials are formed when humans deliberately mix substances together for the express purpose of creating new materials with desirable properties. Most synthetic materials are the result of chemical reactions during which the atomic structures of the original substances are rearranged to form the new material. Common examples of synthetic materials are plastics and fabrics such as nylon.

To better understand synthetic materials…

WHAT ARE SYNTHETIC MATERIALS?. Synthetic materials are formed when humans deliberately mix substances together for the express purpose of creating new materials with desirable properties. Most synthetic materials are the result of chemical reactions during which the atomic structures of the original substances are rearranged to form the new material. Common examples of synthetic materials are plastics and fabrics such as nylon. To better understand synthetic materials…

LET’S BREAK IT DOWN!

Natural Resources

Natural resources are useful raw materials that we get from the Earth. They occur naturally, which means that humans did not make them using a mixture or chemical reaction. Humans use natural resources to form new substances that will be beneficial to us.

Natural Resources Natural resources are useful raw materials that we get from the Earth. They occur naturally, which means that humans did not make them using a mixture or chemical reaction. Humans use natural resources to form new substances that will be beneficial to us.

Plastics

Plastics are synthetic materials that are very useful in our daily world. Plastics can be shaped when they are soft and formed into numerous different shapes that later harden. Humans have learned how to make plastics from a variety of substances, but the most common plastics today are made from fossil fuels like petroleum. Since World War II, the use of plastics has taken off in our country and in our world; you can find plastics almost everywhere.

Plastics Plastics are synthetic materials that are very useful in our daily world. Plastics can be shaped when they are soft and formed into numerous different shapes that later harden. Humans have learned how to make plastics from a variety of substances, but the most common plastics today are made from fossil fuels like petroleum. Since World War II, the use of plastics has taken off in our country and in our world; you can find plastics almost everywhere.

Chemical Reactions

In a chemical reaction, the atoms in the starting substances interact with one another. This often results in the molecules from at least one of the original substances breaking apart, allowing the atoms to rearrange and join together differently. This creates new substances that are called products. The number of atoms of each type is the same before and after a reaction.

Chemical Reactions In a chemical reaction, the atoms in the starting substances interact with one another. This often results in the molecules from at least one of the original substances breaking apart, allowing the atoms to rearrange and join together differently. This creates new substances that are called products. The number of atoms of each type is the same before and after a reaction.

Biodiesel

Biodiesel is an alternative fuel similar to conventional or “fossil” diesel. It is formed from vegetable oils, animal fats, or cooking grease. Biodiesel fuel is considered to be considerably more environmentally friendly than its diesel fuel counterparts. One of the primary benefits of biodiesel fuels is the reduction of air pollution emissions released by the machines that are using it because of the cleaner, less toxic chemical composition.

Biodiesel Biodiesel is an alternative fuel similar to conventional or “fossil” diesel. It is formed from vegetable oils, animal fats, or cooking grease. Biodiesel fuel is considered to be considerably more environmentally friendly than its diesel fuel counterparts. One of the primary benefits of biodiesel fuels is the reduction of air pollution emissions released by the machines that are using it because of the cleaner, less toxic chemical composition.

Biochemists

Biochemists study the chemical reactions that occur in our body. They do so in order to add to our general understanding of these processes and to solve specific problems. Some biochemists are involved in the development of new drugs and medicines that can be used to treat such diseases as cancer or COVID-19. Other biochemists may study genetic disorders to determine if they lead to diseases, or they may conduct research outside of the field of medicine to create solutions for crop diseases or alternative fuel sources. Biochemists often work together in research teams to collaborate and seek solutions together.

Biochemists Biochemists study the chemical reactions that occur in our body. They do so in order to add to our general understanding of these processes and to solve specific problems. Some biochemists are involved in the development of new drugs and medicines that can be used to treat such diseases as cancer or COVID-19. Other biochemists may study genetic disorders to determine if they lead to diseases, or they may conduct research outside of the field of medicine to create solutions for crop diseases or alternative fuel sources. Biochemists often work together in research teams to collaborate and seek solutions together.

Synthetic Materials

Discussion Questions

Vocabulary

Reading Material

LET’S BREAK IT DOWN!

Natural Resources

Plastics

Chemical Reactions

Biodiesel

Biochemists

DIY Activity Guide

Teacher Resources

Lesson Plan

Teacher Guide

Answer Key

Assessment

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