This compartmentalised document contains complete, thorough notes on the halogens (Group 7) and can also act as a "test yourself" resource by covering up certain parts. I use exam vocabulary in my document but it's still easy to follow. These notes are arranged in bullet points, making it clear where each point starts and ends. There are no big, hard-to-follow blocks of text. It might be worth it to print this out and highlight the key words. I hope this helps, goodluck with your exams.