You can identify a gas by passing electricity through it. True or false?

1 Answer
Nov 30, 2015

Answer:

True

Explanation:

When a high voltage is applied to an atomic gas at low pressure it forms a plasma and emits light by a process called glow discharge. It does so at frequencies characteristic of the gas used.

For example, neon emits a reddish orange glow.

This behaviour can be used to identify elements present in a gas.