WorksheetsModule 2 Check Matter
Total questions: 7
Worksheet time: 4mins
A(n) _______________ represents the area in an atom where an electron is most likely to be found.
orbital
atomic mass
energy level
ion
mass number
An atom that gains or loses an electron and has an electric charge is called a(n) _______________.
energy level
neutron
mass number
atomic mass
ion
The combined number of protons and neutrons is the _______________.
atomic number
mass number
ion
atomic mass
energy level
The _______________ is the average of the mass numbers of the isotopes of an element.
atomic mass
energy level
ion
mass number
How many electrons can be held in the innermost energy level of atoms?
2
8
18
32
Many elements are mixtures of
isotopes.
oxygen.
electrons.
neutrons.
The chemical behavior of different elements is determined by the
number of electrons in the innermost energy level.
total number of electrons in all of the energy levels.
number of electrons in the outermost energy level.
number of electrons in the middle energy level.
