User talk:69.137.189.176

September 2012
Hello, I'm Tide rolls. I wanted to let you know that I undid one of your recent contributions, such as the one you made to Dividing line between metals and nonmetals, because it didn’t appear constructive to me. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks,  Tide  rolls  23:50, 24 September 2012 (UTC)