1. Explain why magnesium oxide has a higher melting point than sodium chloride.

Question 1 of 22

2. Explain, in terms of electrons, why isotopes have the same chemical properties

Question 2 of 22

3. Why do elements in the same group of the periodic table have similar chemical properties?

Question 3 of 22

4. What do each of the following state symbols represent: (s), (l), (g), (aq)

Question 4 of 22

5. On the Periodic table what is the meaning of the word Group? What does that tell us about the electron configuration of the atom?

Question 5 of 22

6. What is the formula of the beryllium ion?

Question 6 of 22

7. How many electrons can the first shell hold?

Question 7 of 22

8. Explain, in terms of structure and bonding, why sodium chloride has a very high melting point

Question 8 of 22

9. Balance the following equation: WO₃ + H₂ → W + H₂O

Question 9 of 22

10. State the formula for the lead (II) ion

Question 10 of 22

11. What is the formula for silver nitrate?

Question 11 of 22

12. What is the formula for potassium chloride?

Question 12 of 22

13. How can atoms get a full outer shell?

Question 13 of 22

14. What are the elements in group 0 called?

Question 14 of 22

15. What holds ions together?

Question 15 of 22

16. On the Periodic Table what is the meaning of the word Period? What does that tell us about the electron configuration of the atom?

Question 16 of 22

17. What is the formula of the gallium ion?

Question 17 of 22

18. State the formula for the iron (III) ion

Question 18 of 22

19. How many electrons in the outer shell of group 6 elements?

Question 19 of 22

20. What is needed to complete this diagram to show the ionic bonding in potassium oxide, K₂O ?

Question 20 of 22

21. State the fomula for the two ions in iron (II) sulfide

Question 21 of 22

22. What is special about the elements in group 0?

Question 22 of 22