Use a periodic table for reference
reference, as need
atomic theory
sc 8.7.8.7
hich statement is a part of dalton's a
theory?
a. atoms are composed op
and electrons.
b. elements can have at
e composed of protons, neutrons,
tents can have atoms that are isotopes.
c. one type of atom cannot be changed to
another type by a chemical reaction.
d. electrons move around the nucleus in an
electron cloud.

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.