I love reading the ingredients list. My friend used to think I was weird and once yelled out in chemistry "I get some shower gel and smell it and think 'ohhh that smells nice', you're the only person I know that thinks 'ohhh what ester have they used?'" lol. To be fair it smelled like oranges and I just wanted to know what making it do it!
I've barely gotten over the shame of the stares. But I still do it all the time! Not that I really understand what I'm looking for - only a word with the ending -oate!
Physics with astrophysics is a good choice. I was going to do physics with particle physics and cosmology at Lancaster but I changed my mind at the last minute and decided to switch university so I could study astrophysics instead. I'm sure you'll enjoy it very much - I do. But it is hard though.