What do you mean by "scientific modes"? Jupyter notebooks?
I've never used that, so I don't know what it is exactly nor how to compare. But, although the product comparison page [0] says idea lacks it, there's a doc page that says it has it [1]. It also shows up in the settings window of my IdeaU with Python plugin.
According to this other comparison page [2], it would actually seem that the Idea plugin does more than Pycharm.
