Thank you and much appreciated.
Ok, I've been reading all the Apollo astronaut autobiographies and they mention the different fuels, for instance, hydrazine. Then it got me thinking about chemistry, I mean, how do they actually know it's hydrazine. I'm not really interested in the chemical composition of hydrazine, it just got me thinking.
I'm a complete and total neophyte to chemistry. I bought a periodic table of the elements clear plastic display from Amazon and it's fascinating.
Anyway, how do chemists actually know what a chemical really is? How can they look at a rock and say, ok, this rock has sulfur in it, or that rock has silver in it or whatever.
How do they know a pill has aspirin in it for example. How does anyone measure or test for these elements?
Who first discovered them? And I have read some articles but they assume a body of knowledge I don't have. I need something like a kindergarten level book.
And the elements have a number like mg, 12. How do they actually know for certain it has what, 12 electrons?
This is the very basic stuff I'm talking about and I have even more dopey questions.
I spent my career in aviation but was never taught chemistry.
Take care. Jack.