B.t.k.: An Alternative to Chemical Pesticides [Pdf]

Scratch and sniff an introduction to organic chemical reactions. A creative instructional activity has individuals study the esters commonly used in scratch-and-sniff stickers and advertisements. Following the lab procedure, scholars...

This "Introduction to Chemistry" chapter discusses gases and their properties, ideal gas calculations and equation stoichiometry, and Dalton's law of partial pressures. Many pictures, charts, and sample calculations help to further...

A detailed introduction to chemical reactions, organized into two sections: "Chemical Reactions and Chemical Equations" and "Solubility of Ionic Compounds and Precipitation Reactions." Complete with examples, charts, and equations, this...

Compounds take on different properties than their elemental components. How can scientists determine those elements? A lab-based activity has learners explore several double replacement reactions to analyze compounds qualitatively. They...

A great overview of the chemical reactions chapter from "An Introduction to Chemistry". This presentation, available in .pdf format, highlights the main ideas from the detailed corresponding chapter on chemical reactions. Use as part of...

What a cute approach to chemical bonding! Atoms all have human names and are attending at a dance. Who will pair up with whom? By reading the characteristics, and not the element name, chemistry whizzes figure out the bonding pairs....

Young scientists learn the laws of genetics through data collection and research. They use discussions and online resources to develop an understanding of the related vocabulary.

The Molecular Structure chapter from "An Introduction to Chemistry" textbook discusses the formation of covalent bonds, drawing Lewis dot structures, and the resonance and molecular geometry of molecules. Many pictures and examples are...

A remarkable site about a remarkable matriarch of a family of elephants in Kenya, Echo. Watch the full video here of the life of Echo and her family, as well as her death. Great photos of Echo and her family. Be sure to click on Elephant...

How are chemical reactions like dating? A collision must first occur! In this hilarious approach to speeding up chemical reactions, viewers find out that five changes can increase the rate of reaction: smaller space, increased number of...