Mid-Unit Check-In ATOMIC STRUCTURE

All atoms of the same element have the same

• atomic mass

• number of protons

• number of neutrons

• mass number

How much mass does a proton have?

• 1 amu

• 0 amu

• negative amu

• neutral amu

The two subatomic particles that are equal in mass are

• proton and electrons

• neutrons and electrons

• electrons and isotopes

• protons and neutrons

In the atom, neutrons are located

• in the electron cloud

• in the nucleus

• outside the nucleus

• in shells

Which subatomic particle has a neutral charge?

• proton

• electron

• neutron

• isotope

Which subatomic particle has a positive charge?

• proton

• electron

• neutron

• isotope

Which of these elements has the largest atomic mass?

• Na

• Be

• Br

• Xe

Which element has 1 valence electron?

• Ca

• K

• As

• Kr

Which element has 8 valence electrons?

• Ne

• Ca

• Sr

• C

In the Bohr Model, Carbon would have how many shells?

• 1

• 2

• 3

• 4