chapter 3 - atomic structure

Question 1

atom

Answer 1

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

Question 2

atomic (proton) number

Answer 2

number of protons in the nucleus

Question 3

nucleon (mass) number

Answer 3

number of protons + number of nucleons in the nucleus

Question 4

isotopes

Answer 4

atoms of the same element with the same number of protons and electrons but different number of neutrons

Question 5

what affects chemical and physical properties?

Answer 5

chemical - valence electrons (reactions)
physical - mass (density, melting/boiling point)

Question 6

ion

Answer 6

charged particle formed from an atom of group of atoms by the loss or gain of electrons