Evaporation of Water
These downloadable videos and animations are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to distinguish between boiling and evaporation of water below boiling point.
Boiling forms a pure sample of water in the gas state (the big bubbles), evaporation below boiling point forms a mixture of water and air. Students find it difficult to understand how water particles can separate from each other at temperatures below boiling point. These resources can be used to establish the phenomenon of evaporation below boiling point. The idea of energy distribution amongst particles at a particular temperature can be used to explain the difference between evaporation below boiling point and boiling. Different rates of evaporation for different substances are addressed.
These video and animation files form part of the resources in the section Evaporation of Water in the Stuff and Substance multimedia package, which provides a series of interactive pages that can be used by teachers or students in the classroom.
HEALTH and SAFETY
Any use of a resource that includes a practical activity must include a risk assessment. Please note that collections may contain ARCHIVE resources, which were developed at a much earlier date. Since that time there have been significant changes in the rules and guidance affecting laboratory practical work. Further information is provided in our Health and Safety guidance.