i think i dont understand any of this. i feel like everyone else gets it but me
That feeling is really common and it does not mean you are behind. It just means this topic needs a bit more time to click, and that is completely fine. There is no rush here. Let's start from the beginning of this one concept and go as slowly as you need. What is the part that feels most confusing right now?
the difference between atoms and molecules
That is actually one of the trickiest distinctions in early science. Everyone finds it confusing at first. Let's make it really clear with an example you will remember...