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Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
Dissociation in chemistry is a general process in which molecules (or ionic compounds such as salts, or complexes) separate or split into other things such as atoms, ions, or radicals, usually in a reversible manner.
LibreTexts' current primary support is from the 2018 Open Textbook Pilot Program award from the Department of Education Organization Act. [7] [10] [5] [11] FIPSE [12] Other funding comes from the University of California Davis, the University of California Davis Library, [5] and the California State University System both through MERLOT and its Affordable Learning Solutions (AL$) program.
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
A 12th grade visual arts class in Scott County, Virginia in the United States. Twelfth grade (also known as 12th grade, grade 12, senior year, or class 12) is the twelfth and final year of formal or compulsory education. It is typically the final year of secondary school and K–12 in most parts of the world. Students in twelfth grade are ...
The key concepts of physical chemistry are the ways in which pure physics is applied to chemical problems. One of the key concepts in classical chemistry is that all chemical compounds can be described as groups of atoms bonded together and chemical reactions can be described as the making and breaking of those bonds. Predicting the properties ...
The late 20th century also saw an expansion of the application of analytical chemistry from somewhat academic chemical questions to forensic, environmental, industrial and medical questions, such as in histology. [7] Modern analytical chemistry is dominated by instrumental analysis. Many analytical chemists focus on a single type of instrument.
Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur. The substance (or substances) initially involved in a chemical reaction are called reactants or reagents.