Periodic table scavenger hunt

Solve the tasks with the interactive periodic table and the element pages on cheminteractive.com. Clicking an element opens a pop-up; its “Fact sheet” link takes you to the element page. Groups are numbered 1 to 18 as in the interactive periodic table.

1. Which element has the atomic number 6? Give its name and symbol.

   Open the periodic table (cheminteractive.com/en-US/periodic-table)

2. What is the chemical symbol for sodium?

3. What is the atomic number of iron? How many protons does an iron atom therefore have in its nucleus?

4. Which group is chlorine in? What is the name of this family of elements?

5. Which period is potassium in? How many electron shells are therefore occupied in a potassium atom?

6. How many valence electrons does an oxygen atom have?

7. Which element is in group 2 and period 3?

8. Which noble gas is in period 2? Which group are the noble gases in?

9. Which element in period 3 has 3 valence electrons?

10. Open the element page of silicon. How many valence electrons does a silicon atom have?

    Element page: Silicon (cheminteractive.com/en-US/periodic-table/silicon)

11. In the exercise “Build an atom”, build a neutral atom with 5 protons. Which element do you get, and how many electrons do you need?

    Open the exercise “Build an atom” (cheminteractive.com/en-US/exercises/build-an-atom)

12. Sodium and potassium are both in group 1. How many valence electrons does a potassium atom have? Use this number to explain why both metals react with water in a similar, vigorous way.