This is a basic exercise in nomenclature. The user should refer to periodic tables or other sources for proper atomic symbols and formulas/charges of ions. Capitalization must be done properly ('fe' would be incorrect). Pressing "New Problem" will display a name. Enter the formula of the compound in the answer cell. Do not worry about subscripting numbers (water would be simply "H2O"). Press "Check Answer" to check your work. Pressing "Show Answer" will cause the solution to appear and you will no longer be able submit an answer for that problem. (Note: please use "bicarbonate" for HCO3-1 in this drill.)