CK-12 Foundation
Ck 12: Life Science: Chemistry of Life
[Free Registration/Login may be required to access all resource tools.] Many chemical reactions are going on constantly inside your body. In fact, there are probably thousands of chemical reactions occurring every second in every one of...
CK-12 Foundation
Ck 12: Life Science: Organic Compounds
[Free Registration/Login may be required to access all resource tools.] The main chemical components of living organisms are known as organic compounds and are built around the element carbon. Living things are made up of very large...
TeachEngineering
Teach Engineering: Element, Mixture, Compound
This hands-on activity will help the students have a better understanding of different types of materials as pure substances and mixtures and distinguishes the homogeneous and heterogeneous mixtures by discussing some material they use...
CK-12 Foundation
Ck 12: Biology: Significance of Carbon
[Free Registration/Login may be required to access all resource tools.] Describes the significance of carbon to life on Earth.