The film explains the concept of chemical changes, where two or more materials combine to form entirely different substances.

In a chemical reaction, new materials are always formed. Sometimes these new materials are useful to us. Irreversible changes are permanent. They cannot be undone. For example, you cannot change a ...

Most cell signals are chemical in nature. For example, prokaryotic organisms have ... specialized cells in the human vascular system detect changes in blood pressure — information that the ...

For example, traditional materials under load stress experience ... materials can be created that utilize selective bond activation where force drives a chemical change in selective and productive ...