Atomic Puzzle Xmas

Atomic Puzzle is back with more molecule merging puzzles in a Christmas style. Clear each level by removing the atoms in the correct order. Can you predict the merging of the molecules so that there’s none left at the end of each level?

Click on molecules that are mergeable to merge them. Remove all molecules to complete a level. Click on the button in each level with the question mark in it to see more information on how to play.