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.
Ultimate guide to retirement. A money-market fund invests in cash equivalents - typically super-short-term loans to creditworthy corporate or government borrowers. People often invest the cash portion of their retirement portfolio, if any, in money-market funds. (Other cash investments include certificates of deposit and bank savings accounts.) Though money-market funds are very safe, their long-term returns are lower than those for bonds, and much lower than those for stocks.