Science Struck: Propylene Glycol Dangers

How can you relate colligative properties of solutions to everyday situations? Pupils first discuss the concepts of density, boiling and freezing points, then demonstrate how to accurately determine the boiling and freezing point of...

Describes early uses of chloroform as an anesthetic and the dangers its use posed. Discusses its use as a solvent and some limited uses in dentistry and veterinary medicine. Chloroform was once used in some common products but is now...

Describes the many different uses of bromine, and the harmful effect it can have on one's health plus the best ways to avoid it.

[Free Registration/Login Required] An informational text about a teen who was struck by lightning while listening to an MP3 player. A question sheet is available to help students build skills in reading comprehension.

Students study lightening and the history behind how it was used for electricity.  In this electricity lesson students complete several experiments on the invention of the lightning rod.