Define atom using Dalton theory​

Phase changes are chemical changes. true or false

Ineed the answers for these promblems i have

Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f