Podcast
Questions and Answers
What type of properties of nanomaterials are discussed in the text?
What type of properties of nanomaterials are discussed in the text?
- Chemical and mechanical properties
- Magnetic and catalytic properties
- Surface area and electrical properties (correct)
- Optical and thermal properties
Why do nanomaterials exhibit distinctively different physical properties compared to bulk materials?
Why do nanomaterials exhibit distinctively different physical properties compared to bulk materials?
- Due to their high surface-to-volume ratio (correct)
- Due to their lower surface area
- Due to their larger size
- Due to their similar composition
What happens to the melting point of nanoparticles as their size decreases?
What happens to the melting point of nanoparticles as their size decreases?
- Increases
- Remains the same
- Becomes unpredictable
- Decreases (correct)
Why do some metals that are good conductors in bulk form become semiconductors or insulators when reduced to nano size?
Why do some metals that are good conductors in bulk form become semiconductors or insulators when reduced to nano size?
Which color do gold nanoparticles appear as their surface area increases?
Which color do gold nanoparticles appear as their surface area increases?
What is one method mentioned for the synthesis of nanomaterials in the text?
What is one method mentioned for the synthesis of nanomaterials in the text?
What unique optical property is exhibited by nanoparticles of metals when light hits their surface?
What unique optical property is exhibited by nanoparticles of metals when light hits their surface?
Why do nanoparticles exhibit very high catalytic activity compared to bulk materials?
Why do nanoparticles exhibit very high catalytic activity compared to bulk materials?
Which one of the nanoscale materials is discussed in the text?
Which one of the nanoscale materials is discussed in the text?
What does the melting point of 3nm CdSe nanocrystal tell us about bulk CdSe melting point?
What does the melting point of 3nm CdSe nanocrystal tell us about bulk CdSe melting point?
