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

Question 1 of 22

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

Question 2 of 22

3. 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 3 of 22

4. State the formula of the zinc ion

Question 4 of 22

5. State the formula of the hydrogen ion

Question 5 of 22

6. How many electrons in a phosphide ion?

Question 6 of 22

7. What is the formula of the phosphide ion?

Question 7 of 22

8. 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 8 of 22

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

Question 9 of 22

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

Question 10 of 22

11. What is the formula for lithium carbonate?

Question 11 of 22

12. What is the formula for calcium bromide?

Question 12 of 22

13. How many electrons in a helium atom?

Question 13 of 22

14. When are ions attracted to each other?

Question 14 of 22

15. Explain, in terms of the arrangement of electrons in its atoms, why neon is very unreactive

Question 15 of 22

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

Question 16 of 22

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

Question 17 of 22

18. Explain the term ionic bond

Question 18 of 22

19. What are the elements in group 0 called?

Question 19 of 22

20. State the fomula for the two ions in vanadium (V) oxide

Question 20 of 22

21. What is needed to complete this diagram to show the ionic bonding in sodium chloride, NaCl ?

Question 21 of 22

22. How many electron shells do the elements in the third period have?

Question 22 of 22