“THE inability to balance a chemical equation is a most common difficulty to students of chemistry.” The author has attempted to remedy this very common weakness, and in addition to a concise ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Just like an astronomer investigates outer space, a chemist explores chemical space—a theoretical territory with all possible known (and unknown) chemical compounds. Researchers estimate chemical ...

Physical and Chemical Properties and Changes Physical and chemical properties. Matter: Physical and Chemical Properties and Changes Physical and chemical properties, and physical and chemical changes ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Discover the fascinating chemistry that makes our world and everything in it—including us. Just about every solid, liquid, or gas in the world as we know it begins with reactions between individual ...

Chemical reactions are the breaking and forming of chemical bonds, which are fundamental to the creation of new technologies. Inevitably, discovering and developing ...

Scientists have observed so-called 'roaming' chemical reactions, those that at certain points move away from the lowest minimum energy 'path of least resistance', in highly excited energy states for ...

Speeding up chemical reactions is key to improving industrial processes or mitigating unwanted or harmful waste. Realizing these improvements requires that chemists design around documented reaction ...