4. Atoms and Elements

Sometimes clothes cling together when removed from a dryer. What kinds of charges are on the clothes?

In basic atomic theory, which term describes the smallest particle of an element that can exist while still retaining that element’s identity?

In a simplified model of the atom, what is the dense center of an atom called?

In the simplified model of the atom, what is the basic unit of a chemical element that retains the element’s identity?

Which element is a neutral atom with 15 electrons?

In the simplified model of the atom, most of the volume of an atom is best described as which of the following?

In the simplified atomic model, what determines an atom's identity (which element it is)?

An atom is electrically neutral because which of the following is true?

How many protons are in an atom of bromine, $Br$?

An atom is electrically neutral because it has which of the following properties?

In a simplified model of the atom, where are electrons primarily found?

In a simplified atomic model, what indicates that an atom has no overall (net) charge?

Which element has 7 protons in its nucleus?

In basic atomic theory, what uniquely identifies (defines) a chemical element?

In a simplified model of the atom, where are the electrons found?