Chemistry White Board Review

Ch. 5,14, & 28

For each question

• You will have 10 seconds to write your answer• You are competing against the person at your

table– The person that gets it right gets a point– If you both get it right both earn a point– You keep track of your own points– Keep your partner honest!

Are you ready????

1. What does atomic number indicate?

• # of protons

2. What differentiates the isotopes of carbon from each other?

• They have different number of neutrons.

3. What do the elements in a group have in common?

• They have the same amount of valence electrons = similar reactivity

4. For Carbon-14, what does the number 14 represent?

• Mass number of 14.

5. What are the vertical columns of the periodic table called?

• Groups

6. What determines mass number?

• # protons and neutrons

7. What is the atomic mass of fluorine?

8. Where is the majority of the mass of an atom found?

• The nucleus (protons & neutrons)

9. How does electronegativity change across the periodic table?

• Increases from left to right • Increases from bottom to top

10. What is ionization energy?

• the energy change that accompanies the loss of an electron from a gaseous atom

11. Which metals are known as the alkali metals?

• Group 1

12. Which elements are the halogens?

• Group 7 (17a)

13. Write the equation for the beta decay of Polonium-216

14. Write the equation for the alpha decay of Polonium-216

15. On a separate piece of paper,, explain how the mass of the elements

is calculated for the periodic table using % abundance.