User talk:Jackso02erdf

September 2021
Hello, I'm DB1729. I wanted to let you know that one or more of your recent contributions&#32;to Category:Chemistry have been undone because they did not appear constructive. If you would like to experiment, please use your sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. DB1729 (talk) 21:31, 21 September 2021 (UTC)