Did you know that Tips help lots of people? Well I got a tip for example somebody asked this question 2 days ago and nobody helped them:So does a catalyst increase the probability of a reaction occurring by lowering the amount of energy required for a reaction to occur, or by supplying more energy somehow? It would be very nice if you helped them answer it. 2 yesrs ago I had a test coming up and I used Khan Academy for help but when I asked the question I got stuck on nobody helped me. So i got that question wrong because I had to guess. My tip is if someone is having trouble with their work be nice and help. But if you are the one who asked the question you may need to know not everyone will respond to you right away because they are not on here all the time. So just be patient and we will be with you very soon.