Monday, 18 November 2019

TEST ON DEC 5 and 6 on Types of Reactions Practice sheet with answers

HERE'S A VIDEO SUMMARIZING BALANCING EQUATIONS. Watch this video and then work on the practice questions below


PRACTICE QUESTIONS
Notes on type of reactions  are here
The practice sheet is here 
 the shortcut method of balancing from this sheet here 

Another sheet here

LEGO METHOD, YOU ARE WELCOME TO USE LEGO TO HELP YOU BALANCE EQUATIONS. Please put the lego back in their boxes



Friday, 15 November 2019

nomenclature practice - edited for numbers 51-54


Nomenclature Practice Problems



For each formula, determine if the compound is Ionic or Molecular (Covalent).

1. CuCl2                       5. (NH4)2CO3                         
2. NaCl                        6. HCl
3. FeBr3                       7. NH4OH
4. H2O                         8. CCl4

Write the name for each ionic compound that you identified above. (Don’t forget Roman Numerals, if necessary.)

9. through 13.

Write the name for each molecular compound that you identified above.

14. through 16.

Write the formula for each ionic compound listed below. (Don’t forget Roman Numerals!)

17. iron (II) nitrate      23. iron (III) hydroxide
18. aluminum oxide     24. ammonium sulfate
19. potassium iodide    25. zinc nitrate
20. sodium nitrate        26. hydrogen sulfide
21. copper (I) nitrate   27. lead (II) sulfate
22. iron (III) oxide       28. potassium chlorate
Write the formula for each molecular compound listed below.


29. diphosphorus pentoxide
30. dihydrogen dioxide
31. sulfur dioxide
32. carbon tetrachloride
33. pentacarbon decoxide
34. silicon hexachloride
35. diphosphorus monobromide
36. selenium trioxide
37. tribismuth heptafluoride
38. nonacarbon decahydride

Write the common oxidation number (charge) for each element listed below.

39. sodium                   45. strontium
40. potassium               46. silicon
41. aluminum               47. chlorine
42. bromine                 48. argon
43. arsenic                    49. oxygen
44. copper                    50. magnesium

Write the missing formula or name.

*in 51 to 54, read the notes on how to name these from the Notes on type of reactions which are here
51. octane               53. C2H6
52. C6H6                 54. pentyne


Fill in the missing information for each compound. (Be sure to distinguish between ionic or molecular) (Don’t forget roman numerals, when necessary!)
Name
Compound
55. 
Ca(OH)2
56.     sulfurous acid

57.     nitrogen trihydride

58.    
SO2
59.
H3PO4
60.
CCl4
61.     diphosphorus pentoxide

62.     hydrochloric acid

63.     mercury (II) oxide

64.     hydroiodic acid




For each of the following formulas, write true if the formula is correct or if it is false, correct it!



65. NACl        
66. AlF3                
67. K3PO4      
68. CaNO3      
69. BaCl2        
70. Fli             
71. MgSO4      
72. Ca2C2H3O2
73. K2Cr2O7   
74. MgI