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.
Money Market Funds. A money market fund is a type of mutual fund that is required by law to invest in low-risk securities.These funds have relatively low risks compared to other mutual funds and pay dividends that generally reflect short-term interest rates.Unlike a âmoney market deposit accountâ at a bank, money market funds are not federally insured.hese funds have relatively low risks compared to other mutual funds and pay dividends that generally reflect short-term interest rates. Unlike a âmoney market deposit accountâ at a bank, money market funds are not federally insured.