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Jun 18, 2024 · Learn about chemical reactions, the process of converting one or more substances to different substances. Find out how to distinguish chemical reactions from physical changes, and explore the history and types of chemical reactions.
- According to the modern view of chemical reactions, bonds between atoms in the reactants must be broken, and the atoms or pieces of molecules are r...
- Chemists classify chemical reactions in a number of ways: by type of product, by types of reactants, by reaction outcome, and by reaction mechanism...
3 days ago · Chemical reactions happen at a characteristic reaction rate at a given temperature and chemical concentration. Some reactions produce heat and are called exothermic reactions, while others may require heat to enable the reaction to occur, which are called endothermic reactions.
Jun 18, 2024 · Chain reactions occur in a sequence of steps, in which the product of each step is a reagent for the next. Chain reactions generally involve three distinct processes: an initiation step that begins the reaction, a series of chain-propagation steps, and, eventually, a termination step.
Jun 10, 2024 · In a nuclear reactor the chain reaction is maintained at a controlled, nearly constant level. Nuclear reactors are so designed that they cannot explode like atomic bombs. Most of the energy of fission—approximately 85 percent of it—is released within a very short time after the process has occurred.
Jun 19, 2024 · In other terms, we can say that there is repetition of steps, and it generates the chain carriers. If we explain the chain reaction in consideration with the mechanism, it consists of five steps (1)-Initiation step (2)-Chain propagation step (3)-Chain branching step (4)-Chain inhibition step (5)-Chain termination step
3 days ago · noun. a self-sustaining nuclear reaction; a series of nuclear fissions in which neutrons released by splitting one atom leads to the splitting of others. see more.
3 days ago · Polymerase chain reaction (abbreviated PCR) is a laboratory technique for rapidly producing (amplifying) millions to billions of copies of a specific segment of DNA, which can then be studied in greater detail.
