This operation can be done manually or you can use this simple, neat, free tool called PPSpliT:
PPspliT adds a new menu item in the PowerPoint ribbon that simply split slides with animations into separate slides. It works beautifully. We tested it with the latest version of PowerPoint 2016 and it still works awesome and flawless. Try it out yourself.
Here is the download link for PPspliT: http://www.dia.uniroma3.it/~rimondin/downloads.php