4. Atoms and Elements

In a neutral atom, what primarily determines the mass of the atom?

In a simplified model of subatomic particles, what is the relative mass of an electron compared with a proton (proton mass $=1$)?

In a simplified model of subatomic particles, what kind of electric charge does a proton have?

In a simplified model of the atom, which subatomic particle has the least mass?

Which statement best describes an electron?

In a simplified model of the atom, which subatomic particle has a positive charge?

How many protons are in an atom of tellurium (Te)?

In atomic structure, what electrical charge does a proton carry?

In a simplified model of subatomic particles, what is the magnitude of the electric charge of a neutron?

Which subatomic particle determines the identity of an atom (i.e., which element it is)?

How many protons does an atom of zinc contain?

In a simplified model of the atom, where is the electron located?

Which set correctly lists the three major subatomic particles found in atoms (in a simplified model)?

Which subatomic particle determines the identity of an element (i.e., its atomic number)?

In early atomic theory, which scientist is commonly credited with calculating the electron’s charge-to-mass ratio and thereby enabling determination of the electron’s mass?