Curated OER
Alchemy and Chemical Symbols
In this alchemy worksheet, students read about how alchemists kept their experiment notes in secret code. Students design their own secret code for the given elements. This worksheet has 2 problems to solve.
Wikimedia
Wikipedia: Conservation of Mass
This site from Wilkopedia defines the law of conservation of mass. Included are links to related topics and terms used in the definition.
National Institutes of Health
National Library of Medicine: Harry Potter's World: Potions
A clever account of the history of medicine told as it relates to J.K. Rowling's "Harry Potter." Read about the history of real-life potions, and what led to the development of modern chemistry.