This year, the European Chemical Society (EuChemS) is organising the Chemistree Contest, a contest happening on Twitter in the format of an advent calendar. Everyone is invited to answer easy chemistry-related questions that will be posted at 9 a.m. (CET) every day from 1 December to 25 December 2021 on Twitter, by replying with their answer(s) to the tweet of the question.  

After the contest, winners will be selected according to the number of correct replies to different questions they provided in December. The contestants with the highest number of correct replies will win a prize. 

There is no punishment foreseen for wrong or not entirely correct answers. 

In January 2022, the winners will be announced and contacted via DM to receive their prizes.  

How to participate: 

• Follow us on Twitter: @EuChemS 
• Answer to the daily chemistry-related question by replying with your answer 
• Add #Chemistree