There certainly is a breadth to the chemistry you study at Oxford. The chemistry course is split into four main areas: maths for chemists (my understanding is that this is only really a thing in the first year), inorganic chemistry, organic chemistry and physical chemistry. You will also usually have two afternoons in the lab each week (though you should have two weeks each term where you don’t have any labs) that each last about 6 hours (from 11 am - 5 pm)
Most of what you will be doing in the first term of the first year is all the fundamentals and getting up to speed with things like atomic structure (in waaaay more detail than A level), vectors, calculus, thermodynamics, electrostatics and some of the basics of stereochemistry. This is so that once you move onto the more complex (and arguably more interesting areas), you can explore the theory behind them in considerably more depth. For example, understanding a lot of the organic reactions you will have studied from a mechanistic standpoint requires you to be aware of how orbitals interact within the molecules, so covering orbitals and atomic structure early on makes sense.
I would say I am really enjoying the course. It’s challenging and intense, but equally rewarding and fascinating. If you love chemistry then by all means, apply for it. If not, then this course certainly isn’t for you.