Chemistry

MARCH 23-24, 2011

Chemistry

Daily Assessment- March 23, 2011- Week A8

Bellringer:Benchmark Statement:Class Assignment: Quarter 3 Exam Review

1. How many valence electrons does lithium have?

2. How many valence electrons does potassium have?

3. Draw the Lewis dot structure of sulfur.

4. Draw the Lewis dot structure of boron.

5. Does sodium gain or lose electrons?

6. Does Magnesium gain or lose electrons?

7. Write the ionic compound formed from magnesium and oxygen ions.

8. Write the ionic compound formed between aluminum and nitrogen ions.

9. Write the ionic compound formed between lithium and oxygen ions.

10. What is the main idea of this figure?

11. As atomic number increase from 3 to 10 what happens to ionization energy?

12. As you move down a group on the periodic table, what happens to ionization energy?

13. Where are the alkali metals on the graph?

14. Where are the noble gases on the graph?

15. What is the main idea of this figure?

16. What element attracts electrons the least in a chemical bond?

17. What element attracts electrons the most in a chemical bond?

18. What happens to electronegativity as you move down group 1?

19. What happens to electronegativity as you move across period 2?

20. Name 3 elements that have electronegativity values that are greater than 2.5.

21. In which investigations did a chemical reaction occur?

22. Which investigations show no chemical reaction or you are not able to determine if a chemical reactionoccurred?

23. Which investigation shows a synthesis reaction?

24. Which investigation shows a decomposition reaction?

25. Which investigation shows a single replacement reaction?

26. Which investigation shows a double replacement reaction?

27. Which investigation shows a combustion reaction?

28. Balance the following reaction

__Li + __F2 _LiF

29. Balance the following reaction

__Al + __O2 __Al2O3

30.Balance the following reaction

__Mg + __S2 __MgS

31. Balance the following reaction

__K + __HF __KF + __H2