Ionization energy is the minimum energy required for an atom or molecule to lose an electron.

I go to the sea every year in July.

I wash my hands with liquid soap every day.

Liquid nitrogen is very cold, so care must be taken when handling it.

Liquid oxygen is often used as rocket fuel.

His intelligence quotient is higher than average.

He hydrogenated fatty acids in a chemical experiment.

This compound is stabilized by hydrogenation.

Hydrogen sulphide is extremely toxic, and particularly at high concentrations, it is lethal to humans.

Hydrocarbons are fundamental components of organic chemistry.