- Chemistry | Definition, Topics, Types, History, Facts | Britannica
Chemistry is the science of the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes
- chemistry - Kids | Britannica Kids | Homework Help
Chemistry is one of the major branches of science People who work in chemistry are called chemists Chemists study the substances that make up matter—everything that takes…
- Mole | Definition, Number, Facts | Britannica
Mole, standard unit (6 02214076 x 10^23) in chemistry for measuring large quantities of very small entities such as atoms, molecules, or other specified particles
- Isotope | Examples Definition | Britannica
As chemists used the criterion of chemical indistinguishability as part of the definition of an element, they were forced to conclude that ionium and mesothorium were not new elements after all, but rather new forms of old ones
- Polarity | Definition Examples | Britannica
However, even though chemists need quantum mechanics to attain a detailed quantitative understanding of bond formation, much of their pragmatic understanding of bonds is expressed in simple intuitive models These models treat bonds as primarily of two kinds—namely, ionic and covalent
- chemistry - Students | Britannica Kids | Homework Help
The science of chemistry is the study of matter and the chemical changes that matter undergoes Research in chemistry not only answers basic questions about nature but also…
- Ionic bond | Definition, Properties, Examples, Facts | Britannica
A simple example of such a storage device is the parallel-plate capacitor If positive charges with total charge + Q are deposited on one of the conductors and an equal amount of negative charge − Q is deposited on the second conductor, the capacitor is said to have a charge Q
- Chromatography | Definition, Types, Facts | Britannica
What is chromatography? Why is chromatography used in chemistry? What are the basic parts of a chromatography setup? How does chromatography separate mixtures?
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