Gas Laws Manipulative - something I learned from another AP chemistry teacher years ago. Continuing the tradition of instructional sharing - I passed on the trick to a group of chemistry teachers today. Cover the variable that is constant (in the problem) and observe the relationship between the other two variables. #chemistry
Chemistry Cat I'm quite certain my High School Chemistry teacher taught us a significantly more complicated and senseless mnemonic wherein one knows anions are negative because the second letter of anion is "n" and the first letter of negative is "n."