MYP Integrated sciences
Evaporation and boiling
The two concepts are often confused in students' minds. All liquids have some particles above the body of the liquid that have gained enough energy to escape from the inter-particular attrctive forces.
These higher-energy particles form a gas. This gas is below the boiling point of the liquid and is called a vapour.
Definition:
A vapour is the gaseous form of a substance that exists below the boiling point.
The pressure exerted by the particles of vapour is dependent on the temperature. This pressure is known as the vapour pressure.
Chemical potential energy
Calorimetry
Bond energy
Greenhouse gases