I'd say it depends on the course (especially if it's research based or taught or half/half). But generally it's not like school where you have class everyday at the same time...you might have a couple of days with similar schedules during the week but generally they tend to vary (although you usually have the same weekly schedule throughout term).
As for free time, as you probably won't be on a science course where you have to spend lots of time in labs, I think you'll have plenty of time to do your reading, but don't expect "This is the book, here are the chapters" types of reading, it's all about independent study so you'll be given a reading list and then it's up to you to pick the books/articles and manage your readings. Good time management skills are essential, I think. I usually have my lectures/lab in the morning this term (asides from Tuesdays) and spend the afternoon in the library doing my reading until 6 or so, sometimes I might end up being busy in the afternoon for a couple of hours for EC activities etc. and have to do some work after dinner. I tend to work more during the week and take Sunday off to relax.