1. Bell ringer # 5: Periodic Trends:
Which elements react to form table salt?
Which element is more reactive:
a) Na or Al?
b) Na or Cs?
a) N or F?
3) Which element is found in Earth’s
atmosphere as diatomic molecule?
4) Select the alkaline earth metal which is
used in flashbulbs.

2. Bell ringer # 5: Periodic Trends:
Which elements react to form table salt?
Na and Cl.
Which element is more reactive:
a) Na or Al?
b) Na or Cs?
a) N or F?
3) Which element is found in Earth’s
atmosphere as diatomic molecule?
4) Select the alkaline earth metal which is used
in flashbulbs.

3. Bell ringer # 5: Periodic Trends:
Which elements react to form table salt?
Na and Cl.
Which element is more reactive:
a) Na or Al? Na
b) Na or Cs?
a) N or F?
3) Which element is found in Earth’s
atmosphere as diatomic molecule?
4) Select the alkaline earth metal which is used
in flashbulbs.

4. Bell ringer # 5: Periodic Trends:
Which elements react to form table salt?
Na and Cl.
Which element is more reactive:
a) Na or Al? Na
b) Na or Cs? Cs
a) N or F?
3) Which element is found in Earth’s
atmosphere as diatomic molecule?
4) Select the alkaline earth metal which is used
in flashbulbs.

5. Bell ringer # 5: Periodic Trends:
Which elements react to form table salt?
Na and Cl.
Which element is more reactive:
a) Na or Al? Na
b) Na or Cs? Cs
a) N or F? F
3) Which element is found in Earth’s
atmosphere as diatomic molecule?
4) Select the alkaline earth metal which is used
in flashbulbs.

6. Bell ringer # 5: Periodic Trends:
Which elements react to form table salt?
Na and Cl.
Which element is more reactive:
a) Na or Al? Na
b) Na or Cs? Cs
a) N or F? F
3) Which element is found in Earth’s
atmosphere as diatomic molecule? O2 (g)
4) Select the alkaline earth metal which is used
in flashbulbs.

7. Bell ringer # 5: Periodic Trends:
Which elements react to form table salt?
Na and Cl.
Which element is more reactive:
a) Na or Al? Na
b) Na or Cs? Cs
a) N or F? F
3) Which element is found in Earth’s
atmosphere as diatomic molecule? O2 (g)
4) Select the alkaline earth metal which is used
in flashbulbs. Mg.