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timmmay:Klipspringer: The two I got wrong
- I thought Carbon dioxide made up most of the Earth's atmosphere. Really did not realize it was Nitrogen.
- "Nails rusting" a chemical reaction?
Nitrogen is inert, for us. CO2 would be a problem, global warming.
Rust = iron plus oxygen.
tdgeek:timmmay:Klipspringer: The two I got wrong
- I thought Carbon dioxide made up most of the Earth's atmosphere. Really did not realize it was Nitrogen.
- "Nails rusting" a chemical reaction?
Nitrogen is inert, for us. CO2 would be a problem, global warming.
Rust = iron plus oxygen.
Rust is ferric oxide
Sometimes I just sit and think. Other times I just sit.
robjg63:jeffnz: you guys are way to clever for this old guy I only got 9/13 but one was rushing, even so its ok I'm not a University educated person.
Hey! Dont use age as an excuse - You have had longer to mop up information - of course some does start to fall out of your head to make way for new stuff :-)
I got 13/13 and never went to university - I cant actually think what of this general knowledge would be specifically university taught anyway....
Galaxy S10
Garmin Fenix 5
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