This is a flash card game of polyatomic ions. The goal is simple. Write the formula of the compound you are given. There are two ways to do this: 1. Non-formula notation. This is the hardest method of entering the formulas. When the question box appears, you need to type in the formula in a certain order. For example, phosphate is P and O4 (four oxygen) and a charge of 3-. You would write it like this: PO4^3- The "^" symbol is what you would use in math to add an exponent to a number. 2. Formula notation. Best way to do it because you can see what you are doing! When this mode is on, a set of buttons will appear. Here are the buttons: The grey box with an "^" is how you would enter the charge of the ion. Press this button then type a number or add the charge. Press it again to go back to normal notation. The grey bow with a "#" is the number of atoms for the element after it. Press it again to go back to normal notation. If your answer needs a "#" and a "^", use the "#" button first then "^". Do this before going back to normal notation. The up arrow button is the shift key. The "C" button is the clear entry button. The "+" button will add a positive charge. Only works in "^" mode. The "_" button will add a negative charge. Only works in "^" mode. The submit button will submit your answer and clear what you have typed. There are two more options available to you. You can check "Show answers" to show you the correct answer after you submit you answer. Great for studying! Check "Custom list" to choose the questions you want asked. Click "Edit question list" to edit the list of custom questions. The flash cards will continue to show until you press the "Stop button" Have fun studying chemistry! Warning: The compound acetate has two answers and you need to input both in one answer. There correct answer for it is "CH3COO^- or C2H3O2^-" Make sure to include the "or".
It has been a long time since I made a Scratch project. I am taking chemistry in college and needed a fun why to memorize the ion formulas, so I made a project! Hopefully this will lead into more fun things like games and stuff. In the mean time, enjoy some chemistry! Update: 2/15/13 V 1.0.1 Fixed spelling of chorite to chlorite.
