The last 2 post were correct.
You only get 6 pieces of paper. It may not be white paper...meaning it's possible to get colored paper. On the top of each paper, on one side, there will be some typed writing...I think it was something regarding ethics and the proper use of scratch paper. It takes up about 1/5 of the page.
And I agree that you should get additional scratch paper during your break, even if you think you will have enough. Reading Comp and Quant Reasoning will probably use up a lot of paper. So plan on using up to 6 pieces of paper for the Nat. Sci and PAT. Then during your break, go and get six more pieces of paper. You will have to sign out for 6 more pieces of paper AND return all of the first 6, even if you didn't use it all.
BTW, you can have as many pencils as you request 🙂
And if I may be allowed to offer some advice, even though you didn't ask for it, you should only practice with 6 pieces of scratch paper at a time, and never write on your test material (if it is in paper-pencil format)...in order to best mimic your test environment.
Good luck.