"Chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei."
This topic covers the types of chemical reactions, including synthesis, decomposition, combustion, and oxidation-reduction.
Chemical reactions: The process by which one or more substances are transformed into a new substance with different chemical and physical properties.
Reactants: The starting substances in a chemical reaction.
Products: The substances formed as a result of a chemical reaction.
Chemical equations: A written representation of a chemical reaction using formulae and symbols.
Balancing chemical equations: The process of adjusting the coefficients of a chemical equation to ensure that the number of atoms of each element is equal on both sides of the equation.
Types of chemical reactions: There are various types of chemical reactions like synthesis, decomposition, single replacement, double replacement, and combustion reactions etc.
Reaction rate: The speed at which a chemical reaction proceeds.
Catalysts: Substances that increase the rate of a chemical reaction without being used up in the reaction.
Reaction stoichiometry: The quantitative relationships among the reactants and products in a chemical reaction.
Thermochemistry of chemical reactions: The study of the heat energy changes associated with chemical reactions.
Acid-base reactions: Chemical reactions involving transfer of protons (H+ ions).
Redox reactions: Reactions involving transfer of electrons from one species to another.
Oxidation state: A number assigned to an atom in a molecule or ion to indicate the general distribution of electrons among the bonded atoms.
Reaction mechanism: The step-by-step sequence of events that occur during a chemical reaction.
Chemical equilibrium: The state in which the rates of the forward and reverse reactions are equal and the concentrations of the reactants and products remain constant.
"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."
"Chemical reactions yield one or more products, which usually have properties different from the reactants."
"Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism."
"Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions."
"Typically, reaction rates increase with increasing temperature because there is more thermal energy available to reach the activation energy necessary for breaking bonds between atoms."
"A reaction may be classified as redox in which oxidation and reduction occur or non-redox in which there is no oxidation and reduction occurring."
"Most simple redox reactions may be classified as a combination, decomposition, or single displacement reaction."
"Different chemical reactions are used during chemical synthesis in order to obtain the desired product."
"In biochemistry, a consecutive series of chemical reactions form metabolic pathways, where the product of one reaction is the reactant of the next reaction."
"These reactions are often catalyzed by protein enzymes. Enzymes increase the rates of biochemical reactions."
"Metabolic syntheses and decompositions impossible under ordinary conditions can occur at the temperature and concentrations present within a cell."
"The general concept of a chemical reaction has been extended to reactions between entities smaller than atoms, including nuclear reactions, radioactive decays, and reactions between elementary particles."
"Nuclear chemistry involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur."
"Chemical equations symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions."
"Chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei."
"Reaction rates increase with increasing temperature because there is more thermal energy available to reach the activation energy necessary for breaking bonds between atoms."
"A reaction may be classified as redox in which oxidation and reduction occur or non-redox in which there is no oxidation and reduction occurring."
"Reactions often consist of a sequence of individual sub-steps, the so-called elementary reactions, and the information on the precise course of action is part of the reaction mechanism."