Imperfections in Solids - Atomic Vibrations

4 important questions on Imperfections in Solids - Atomic Vibrations

What is an atomic vibration?

Every atom in a solid material is vibrating very rapidly about its lattice position within a crystal.

Why are atomic vibrations defects?

Because at any instant of time not all atoms vibrate at the same frequency and amplitude.

What is a measure for the average vibrational activity of atoms and molecules?

The temperature of a solid.
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What is a catalyst?

A substance that speeds up the rate of a chemical reaction without participating in the reaction itself.

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