1. When are ions attracted to each other?

Question 1 of 22

2. How can atoms get a full outer shell?

Question 2 of 22

3. State the formula for the iron (II) ion

Question 3 of 22

4. Balance the equation for the reaction: ___ HCl(aq) + ___ MnO₂(s) → ___MnCl₂(aq) + ___H₂O(l) + ___ Cl₂(g)

Question 4 of 22

5. What are the elements in group 0 called?

Question 5 of 22

6. How many electrons can the first shell hold?

Question 6 of 22

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

Question 7 of 22

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

Question 8 of 22

9. If iron chloride has the formula FeCl₂, what is the formula of the iron ion?

Question 9 of 22

10. What is the formula of the sulfide ion?

Question 10 of 22

11. Explain, in terms of structure and bonding, why magnesium oxide has a higher melting point than sodium chloride

Question 11 of 22

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

Question 12 of 22

13. What is the formula for potassium sulfide?

Question 13 of 22

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

Question 14 of 22

15. What is the formula for magnesium sulfate?

Question 15 of 22

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

Question 16 of 22

17. How many electrons in a helium ion?

Question 17 of 22

18. 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 18 of 22

19. 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 19 of 22

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

Question 20 of 22

21. How many electrons in a calcium atom?

Question 21 of 22

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

Question 22 of 22


 

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