Nanomaterials and Biomaterials Overview
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Questions and Answers

What is the size range of nanomaterials?

  • 1-100 nm (correct)
  • 10-100 nm
  • 100-1000 nm
  • 1-10 nm

    • Which of the following is an example of a nanomaterial?

  • PLA
  • Graphene (correct)
  • Collagen
  • Hydroxyapatite

    • What property of nanomaterials enhances their reactivity?

  • Low reactivity
  • High surface-to-volume ratio (correct)
  • High cost
  • High density

    • Which of the following is a primary application of nanomaterials?

    <p>All of the above</p> Signup and view all the answers

    What is a major use of nanomaterials in electronics?

    <p>Miniaturization of components</p> Signup and view all the answers

    Which biomaterial is commonly used in bone implants?

    <p>Hydroxyapatite</p> Signup and view all the answers

    What is a characteristic of biomaterials used in medical applications?

    <p>Biocompatibility</p> Signup and view all the answers

    What is the function of biomaterial scaffolds in tissue engineering?

    <p>To support tissue growth and regeneration</p> Signup and view all the answers

    Which of the following is an example of a biodegradable polymer used in biomaterials?

    <p>PLA (Polylactic Acid)</p> Signup and view all the answers

    Which property of nanomaterials is particularly useful for drug delivery systems?

    <p>High surface area</p> Signup and view all the answers

    What is a common application of nanomaterials in medicine?

    <p>Drug delivery</p> Signup and view all the answers

    What does biocompatibility in biomaterials refer to?

    <p>The ability to integrate with living tissue without causing immune rejection</p> Signup and view all the answers

    What is a potential negative effect of nanomaterials?

    <p>Toxicity to ecosystems</p> Signup and view all the answers

    Which of the following biomaterials is commonly used for surgical implants?

    <p>Hydroxyapatite</p> Signup and view all the answers

    What is one advantage of biodegradable biomaterials?

    <p>They do not need to be removed after use</p> Signup and view all the answers

    Which of the following is an effect of using nanomaterials in energy systems?

    <p>Increased energy conversion efficiency</p> Signup and view all the answers

    How are biomaterials typically used in wound healing?

    <p>To provide structural support and promote tissue regeneration</p> Signup and view all the answers

    Which of the following is a challenge associated with the use of nanomaterials?

    <p>Environmental accumulation and toxicity</p> Signup and view all the answers

    What is a primary property of nanomaterials that makes them effective in drug delivery?

    <p>High surface area-to-volume ratio</p> Signup and view all the answers

    What is a common use of biomaterials in tissue engineering?

    <p>Temporary scaffolds for tissue regeneration</p> Signup and view all the answers

    Which of the following nanomaterials is often used in electronics due to its electrical properties?

    <p>Graphene</p> Signup and view all the answers

    What is a key benefit of using biomaterials for implants and prosthetics?

    <p>They support tissue healing and integration with the body</p> Signup and view all the answers

    What is the role of quantum dots in nanotechnology?

    <p>Optical applications (e.g., fluorescence)</p> Signup and view all the answers

    What is the impact of size-dependent properties in nanomaterials?

    <p>They cause nanomaterials to behave differently from bulk materials</p> Signup and view all the answers

    What is a key factor in choosing biomaterials for medical implants?

    <p>Biocompatibility and ability to integrate with body tissue</p> Signup and view all the answers

    Its purpose is to recycle waste products by giving it to other people for free

    <p>Freecycling</p> Signup and view all the answers

    It is a material that is not biodegradable, but it can be recycled repeatedly without diminishing its quality.

    <p>Metal</p> Signup and view all the answers

    Which represents a process in the total materials cycle:

    <p>Earth → Raw Materials → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste → Earth</p> Signup and view all the answers

    The following are compositions of glass EXCEPT:

    <p>Alkaline</p> Signup and view all the answers

    Its purpose is to recycle used waste products.

    <p>Recycling</p> Signup and view all the answers

    Is technically a form of reusing, but it refers more specifically to items that are discarded and broken down into their raw materials.

    <p>Deconstruction</p> Signup and view all the answers

    The materials reused in recycling serve as substitutes for raw materials obtained from such increasingly scarce natural resources as the following EXCEPT:

    <p>Geothermal Heat</p> Signup and view all the answers

    Which is a type of reuse:

    <p>Downcycling</p> Signup and view all the answers

    What is the number on the recycle code of polypropylene?

    <p>4</p> Signup and view all the answers

    Its main goals include preserving architectural and cultural heritage, transforming urban blight, and igniting social change.

    <p>Adaptive Reuse</p> Signup and view all the answers

    It can help reduce the quantities of solid waste deposited in landfills, which have become increasingly expensive.

    <p>Recycling</p> Signup and view all the answers

    Can be defined as using a waste product without further transformation and without changing its shape or original nature.

    <p>Reuse</p> Signup and view all the answers

    Which of the following is NOT a part of the process in recycling metals:

    <p>Testing</p> Signup and view all the answers

    This is the second option in the waste hierarchy.

    <p>Reuse</p> Signup and view all the answers

    It is a closed system, in that its materials resources are finite.

    <p>Earth</p> Signup and view all the answers

    Typical materials that are recycled include the following EXCEPT:

    <p>Appelation</p> Signup and view all the answers

    Which of the following is an application on the total materials cycle.

    <p>Energy</p> Signup and view all the answers

    Different types of solid wastes can be reused, such as the following EXCEPT:

    <p>Detergents</p> Signup and view all the answers

    It is the repurposing of buildings that have outlived their original purpose.

    <p>Adaptive Reuse</p> Signup and view all the answers

    Major sources of waste are from packaging, junked automobiles, automobile tires, and domestic durable goods.

    <p>Plastics</p> Signup and view all the answers

    This is a process from the total material cycle:

    <p>Waste → Recycle/Reuse → Raw Materials → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste</p> Signup and view all the answers

    The purpose of this is to recycle things that have been previously used by giving them away to other people for free.

    <p>Freecycling</p> Signup and view all the answers

    What is the number on the recycle code of High-density polyethylene?

    <p>2</p> Signup and view all the answers

    What is the number on the recycle code of Polysterene?

    <p>6</p> Signup and view all the answers

    Study Notes

    Nanomaterials and Biomaterials

    • Nanomaterial Size Range: 1-100 nm
    • Example Nanomaterial: Graphene
    • Enhanced Reactivity: High surface-to-volume ratio
    • Nanomaterial Application: Energy storage
    • Biomaterial used in Bone Implants: Hydroxyapatite
    • Biocompatibility Characteristic: Ability to integrate with living tissue without causing immune rejection
    • Biodegradable Polymer: PLA (Polylactic Acid)
    • Drug Delivery System Property: High surface area
    • Nanomaterial Application in Medicine: Drug delivery
    • Negative Effect of Nanomaterials: Toxicity to ecosystems
    • Biodegradable Biomaterial Advantage: They do not need to be removed after use.
    • Nanomaterial Effect in Energy Systems: Increased energy conversion efficiency
    • Biomaterial Use in Wound Healing: Structural support and promote tissue regeneration
    • Challenge Associated with Nanomaterials: Environmental accumulation and toxicity
    • Nanomaterial Property for Drug Delivery: High surface area-to-volume ratio
    • Biomaterial Use in Tissue Engineering: Temporary scaffolds for tissue regeneration
    • Nanomaterial for Electronics: Graphene
    • Biomaterial Benefit for Implants and Prosthetics: Support tissue healing and integration with the body
    • Quantum Dot Role: Optical applications (e.g., fluorescence)

    Recycling and Re-use of Materials

    • Freecycling: Recycling waste products by giving to others for free

    • Non-Biodegradable Recyclable Material: Glass

    • Material Cycle Process: Earth → Raw Materials → Synthesis and Processing → Manufacture, Assembly, Engineered Materials → Product Design → Application → Waste

    • Glass Composition (EXCEPT): Alkaline

    • Recycling Meaning: Technically a form of reusing, specifically referring to items broken down to raw materials.

    • Recycling Substitutes (EXCEPT): Geothermal Heat

    • Reuse Type: Downcycling

    • Recycle Code of Polypropylene: 5

    • Recycle Code of High-density Polyethylene: 2

    • Recycle Code of Polysterene: 6

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    Nano and Biomaterials Past Exam Paper PDF

    Description

    This quiz explores the key concepts related to nanomaterials and biomaterials, including their properties, applications, and challenges. Learn about the unique characteristics of materials like graphene, hydroxyapatite, and polylactic acid, as well as their impact on energy systems and medicine.

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