-Atom

-Atomic number

-Proton

-Electron

-Neutron

-Isotope

-Mass number/Atomic mass

-Element

-Atomic symbol

-Periodic Table

-Group

-Period

-Shell

-Atomic spectrum

-Quantum Hypothesis

1. Make a sketch of an atom. Be sure to include and label the three subatomic particles. Put the appropriate charge next to each particle.

2. What is an isotope? What is a mass number/atomic mass number? Why are atomic numbers always a whole number but mass numbers rarely a whole number?

3. How are elements arranged in the periodic table? Briefly describe two "patterns" (not including atomic number) in how the periodic table is organized.

4. What does "quantum" mean in relation to the Quantum Hypothesis?

5. How does the quantum hypothesis relate to previous concepts that was covered in the physics units? Hint: think about energy!