To remember the difference between discrete and continuous variables, I think of discrete as black and white and I think of continuous variables like a gray scale. probability is on a scale from 0-1. The closer a probability is to 1, the more likely it is to occur. Probability can be very helpful in many different topics, such as statistics. I don't know how probability will apply to physics, but I am curious to find out. Gibbs Free energy gives us information about a reaction. A positive Gibbs free energy means it is a non spontaneous reaction and requires energy to be put in for it to occur. A negative Gibbs free energy indicates that it is a spontaneous, or exothermic reaction and releases energy. To remember the difference between microstate and macrostate, micro is more specific and involves the specific make up or order of a system. The macrostate is the bigger picture, so it is the overall makeup or ratio of a system. Because of this, several different microstates can make the same macrostate. A large number of particles is a very relative term. I looked it up and didn't find anything that defined what a large number of particles is. I, however, would assume it would be closer to infinity. Since one mole has about 6.022e23 molecules in it, I would assume you would need many more moles/molecules to have a large number of particles.
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