Press study to scroll through compound names, chemical formula, whether or not it is an Ionic or Covalent compound, and a picture of the compound or something that has the compound as the main ingredient. Once you think you've got it stop the program and press practice. There you match up the compound names, formulas, whether or not it's Ionic or Covalent, and the picture. Once you think you've matched a compound, press space.
I made this as a chemistry project