chap 3 atomic structure

Question 1

what is an atom

Answer 1

smallest particle that can still have the chemical characteristics of an element

Question 2

what is an ion

Answer 2

particle formed when atom/group of atoms gains or loses electron(s) but no. of protons and neutrons remains the same

Question 3

what are isotopes

Answer 3

atoms of the same element that have the same proton (atomic) no. but diff nucleon no. They have diff no. of neutrons

Question 4

why are neutrons found in between protons in a nucleus

Answer 4

prevent positive charges from repelling and breaking up the nucleus