Understanding the Periodic Table

What do the rows in the periodic table represent?

• The atomic mass

• The number of valence electrons

• The number of energy levels

• The atomic number

What is indicated by the group number in the periodic table?

• The atomic mass

• The number of neutrons

• The number of protons

• The number of valence electrons

Which group of elements is known for being stable and non-reactive?

• Transition metals

• Halogens

• Alkali metals

• Noble gases

Why are noble gases considered to be in a 'happy place'?

• They have the smallest atomic radius

• They have a full outer shell of electrons

• They have the highest atomic mass

• They are the most reactive

Which group is highly reactive due to having one valence electron?

• Group 2

• Group 18

• Group 1

• Group 17

What happens when elements from Group 1 are placed in water?

• They cause an explosion

• They change color

• They dissolve slowly

• They become non-reactive

How many energy levels does aluminum have?

• Three

• Four

• Two

• One

In which group is aluminum found?

• Group 1

• Group 13

• Group 17

• Group 18

How many valence electrons does chlorine have?

• Five

• Six

• Seven

• Eight

Which group is known for being one electron short of a full outer shell, making them highly reactive?

• Group 1

• Group 2

• Group 18

• Group 17