10 Questions
What type of properties of nanomaterials are discussed in the text?
Surface area and electrical properties
Why do nanomaterials exhibit distinctively different physical properties compared to bulk materials?
Due to their high surface-to-volume ratio
What happens to the melting point of nanoparticles as their size decreases?
Decreases
Why do some metals that are good conductors in bulk form become semiconductors or insulators when reduced to nano size?
Separation of electronic bands due to fewer atoms present
Which color do gold nanoparticles appear as their surface area increases?
Red to black
What is one method mentioned for the synthesis of nanomaterials in the text?
Precipitation Method
What unique optical property is exhibited by nanoparticles of metals when light hits their surface?
Surface Plasmon Resonance
Why do nanoparticles exhibit very high catalytic activity compared to bulk materials?
Surface-to-volume ratio increase
Which one of the nanoscale materials is discussed in the text?
Metals
What does the melting point of 3nm CdSe nanocrystal tell us about bulk CdSe melting point?
Bulk CdSe has a higher melting point than 3nm CdSe.
This quiz covers the properties of nanomaterials including surface area, electrical, optical, thermal, and catalytic properties. It also explores the synthesis methods such as top-down, bottom-up, sol-gel, and precipitation methods. Additionally, it discusses nanoscale materials like fullerenes, carbon nanotubes, and graphenes.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
