So I'm taking AS chemistry (WJEC) and in our booklet, there's a section all about smart materials and nanoscience. It more or less just asks for what they are, how are they used, and what are the problems with them. But after looking at the specification, the teacher's guide, and looking for questions using the WJEC question bank, I can't find anything talking about us needing to know about this. I know it came up at GSCE but I'm wondering should I learn (more like memorize) the section or just skip it?