John Dalton
"matter cannot be created nor destroyed or divided into smaller particles"
The fourth option on Edgen, "two alcohol functional groups". You're welcome :)
I believe it’s Chemical energy but please correct me if i’m wrong
63/29 Cu (copper-63)
65/29 Cu (copper-65)
24/12 Mg (magnesium 24)
25/12 Mg (magnesium 25)
26/12 Mg (magnesium 26)
6/3 Li (lithium 6)
7/3 Li (lithium 7)
The top number is the mass number and you find that by adding the number of neutrons and atomic number
The bottom number is the atomic number and it’s the number or protons
i think that the answer is d. millions of small rocky objects
