Surface Area to Volume Ratio at the Nanoscale Flashcards

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What is meant by the surface area of a particle?

It is the total area of the outside of the particle that is in contact with its surroundings.

It is the amount of space the particle takes up.

It is the surface area of the particle divided by its volume.

As particles get smaller, their surface area to volume ratio gets larger.

They are extremely small, so a large fraction of their atoms are on the surface compared with inside.

The total surface area increases because there are many more faces exposed.

Their large surface area to volume ratio means more particles are exposed and can react at the same time.

Because their large surface area to volume ratio gives a lot of active surface for a small amount of material.

They provide a lot of surface for reactant particles to stick to and react, so the reaction can be sped up.