Relative to a bulk sample of gold,nanoparticles of gold have
A)greater reactivity and higher melting point.
B)greater reactivity and lower melting point.
C)lower reactivity and higher melting point.
D)lower reactivity and lower melting point.

Question

Quizplus · Accepted Answer

Nanoparticles of gold have greater reactivity due to their increased surface area relative to their volume, and a lower melting point because the reduced size of the particles allows atoms to move more freely at lower temperatures.

Relative to a Bulk Sample of Gold,nanoparticles of Gold Have