Which option is a natural material that is not a fossil fuel?(1 point)
cotton
cotton
natural gas
natural gas
petroleum
petroleum
vinyl
What is a polymer?(1 point)
Responses
a piece of a natural resource that has been broken down before it is recycled into new materials
a piece of a natural resource that has been broken down before it is recycled into new materials
a natural resource used to make synthetic materials
a natural resource used to make synthetic materials
a chain of repeating compounds found in both natural and synthetic materials
a chain of repeating compounds found in both natural and synthetic materials
a natural resource formed on Earth from plant or animal remains
a natural resource formed on Earth from plant or animal remains
cotton
What must happen for a natural resource to become a synthetic material?(1 point)
Responses
It needs to be pounded very thin.
It needs to be pounded very thin.
It needs to be dried out.
It needs to be dried out.
It needs to go through a phase change.
It needs to go through a phase change.
It needs to go through a chemical reaction.
It needs to go through a chemical reaction.
a chain of repeating compounds found in both natural and synthetic materials
How is plastic made?
Plastic is typically made through a process called polymerization. It involves the combination of small molecules called monomers to form long chains of repeating units, known as polymers. These polymers can be derived from various sources, including fossil fuels such as crude oil or natural gas, or from renewable resources like plant-based materials. The monomers are chemically bonded together under specific conditions of temperature, pressure, and catalysts to create different types of plastics with distinct properties. The resulting polymer materials can then be molded, shaped, or formed into various products and objects.
How is plastic made?(1 point)
Responses
Coal and natural gas are chemically broken down into small compounds that combine to form plastic.
Coal and natural gas are chemically broken down into small compounds that combine to form plastic.
Oil and natural gas are chemically broken down into small compounds that combine to form plastic.
Oil and natural gas are chemically broken down into small compounds that combine to form plastic.
Oil and natural gas are broken down from long chains into the smaller compounds we call plastic.
Oil and natural gas are broken down from long chains into the smaller compounds we call plastic.
Coal and natural gas are broken down from long chains into the smaller compounds we call plastic.
Oil and natural gas are chemically broken down into small compounds that combine to form plastic.
Which of the following describes a context clue?(1 point)
Responses
information in a text that helps the reader understand the meaning of a word
information in a text that helps the reader understand the meaning of a word
dictionary definitions of words included in a text to help the reader understand their meaning
dictionary definitions of words included in a text to help the reader understand their meaning
phrases in a text that have a meaning other than their literal meanings
phrases in a text that have a meaning other than their literal meanings
descriptions in a text that help the reader picture what the author is describing
descriptions in a text that help the reader picture what the author is describing