Answer:
homogeneous mixtures: iron,alcohol,zonrox,wine.
heterogeneous mixtures: smoke,batchoy,spaghetti,halo halo,book,clothes.
Answer:
That would be hydrogen and helium! :)
Answer:
I think its 1.2 cause I divided 15.5 with 12 and got 1.2 as an answer
B is true if we subtract atomic number(the number of protons )from the mass number
we can find neutrons.
hope this helps
