What is an element?

What do groups in the periodic table show?

Describe structure of an atom

What is the relative electrical charge of protons?

What is the relative electrical charge of neutrons?

What is the relative electrical charge of electrons?

In an atom, what is the number of electrons equal to?

Do atoms have an overall electrical charge?

What is the atomic number of an element?

What is the mass number of an element?

What do all atoms of a particular element have the same number of?

What are isotopes?

What do electrons occupy?

Do the electrons in an atom occupy the highest or lowest available energy level?

What is the mass of a proton?

What is the mass of a neutron?

What is the mass of an electron?

What is the relative atomic mass of an element?