Which statement describes the difference between chemical reactions and nuclear decay

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

What reaction is taking place? 02 + c3h8 = h20 + co2

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!