Multiple ChoiceIn a simplified model of the atom, which subatomic particles account for most of the atom's mass?2views
Multiple ChoiceTwo atoms always represent the same element if they have the same number of which subatomic particle?2views
Multiple ChoiceIn a simplified model of subatomic particles, what electric charge does a proton have?2views
Multiple ChoiceIn the simplified model of subatomic particles, what is the electric charge of a proton?3views
Multiple ChoiceIn the simplified model of subatomic particles, the positively charged particle in an atom is the:2views