1 A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. 2  In a chemical reaction, the atoms and molecules that interact with each other are called reactants. 3  In a chemical reaction, the atoms and molecules produced by the reaction are called products.
FidelityÂ® Defined Maturity Funds. Defined Maturity Funds (DMFs) are an innovative way to invest in municipal bonds. Like Fidelity's other municipal bond funds, DMFs offer professional management, diversification, and seek to provide federally tax-exempt monthly income. They can also be sold at the end of each business day at their net asset value.
Unsourced material may be challenged and removed. (May 2009). In finance, maturity or maturity date refers to the final payment date of a loan or other financial instrument, at which point the principal (and all remaining interest) is due to be paid. The term fixed maturity is applicable to any form of financial instrument under which the loan is due to be repaid on a fixed date.