The Nanoscale Compared With Atoms and Molecules Flashcards

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What is a nanometre (nm) in metres?

A nanometre is one billionth of a metre, which is 0.000000001 m.

What size range is called the nanoscale?

The nanoscale is from about 1 nanometre to 100 nanometres in size.

About how big is a typical atom in nanometres?

A typical atom is about 0.1 nanometres across.

Are nanoparticles bigger or smaller than single atoms and molecules?

Nanoparticles are bigger than single atoms and molecules but smaller than normal lumps of material.

How does the nanoscale sit between atoms and bulk materials?

Atoms are smaller than 1 nm, bulk materials are much larger than 100 nm, and nanoparticles in between link the two scales.

If each atom is about 0.1 nm wide, roughly how many atoms lined up make 10 nm?

About 100 atoms lined up would make 10 nanometres.

Why can we not see individual atoms or nanoparticles with our eyes?

They are far too small; their size is much smaller than the smallest detail our eyes can see.

What is meant by the term nanoscience?

Nanoscience is the study of structures and materials on the nanoscale, between about 1 and 100 nanometres.

Why do scientists use nanometres instead of metres when talking about atoms and molecules?

Because atoms, molecules and nanoparticles are so small that using metres would give very tiny, awkward numbers.