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.
In a previous post we discussed the most common types of investment funds; mutual funds and exchange traded funds (ETFs). This review will focus on a specific version of these funds, the defined maturity fund. A defined maturity fund (DMF) is, simply put, a fund which has a specified ending date, which is generally included in the name of the fund. For example, a 2020 fund would be a fund that would close down and return all assets to investors at some point in the year 2020.