Chemistry Quiz Guide Make sure that you know the subatomic particles that we discussed, where they are found in the atom, their charges, and their relative masses. Know how to tell how many protons atoms of an element have by looking at the periodic table. Be able to differentiate between uncharged atoms, ions, and isotopes. Be able to differentiate between the chemical bonds and attractive forces that we discussed. Understand the properties of water and their cause. Be able to differentiate between solute and solvent. Know the relationship between the pH of a solution and the relative concentrations of H+ and OH-­‐ ions in the solution.