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RE: Chemistry Lesson: Part 1 (Introduction to the Study of Chemistry)
Thanks for this nice post! I have two remarks, if I can :)
I don't fully agree with your definition of a theory. A theory has a mathematical structure that allows to use it for making predictions (which makes it testable). It is hence more than just an explanation of facts.
I also believe that it would be helpful to add, when you define chemistry, the scale where it applies. What is called matter does not have the same meaning at the elementary particle level and in chemistry.
You are correct in both cases. The way I explained things is the way these are presented in most general chemistry texts and courses.
When you learn science you also learn that as you progress through courses, terms are further refined. I used to say, by the time I was done with organic, 50% of what I learned in general chemistry wasn't exactly correct. Then you take physical chemistry and find that another 50% of all you knew wasn't exactly correct. The way things are defined in general chemistry are truly general definitions for things, and like you pointed out, there's more too it.
Indeed.
By the way, do not hesitate to continue with this series of posts :)