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2nd END OF THE QUARTER EXAM – STUDY GUIDE- WORKSHEET

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1)      Watch the following video and answer the questions below:
http://analia-sanchez.net/index.php/interactive/dissolving
What has to happen in order for the NaCl to be dissolved? If the attractive forces among solid particles are less than the attractive forces between the solid and a liquid, the solid will?

2)      How does the following periodic properties change through the periodic table?

  1. Atomic Radii
  2. Electronegativity
  3. Ionization Energy
  4. Metallic Character

3)      Which are the properties of metals?

4)      Do they tend to win or lose electrons in their last level?

5)      Which are the properties of non metals?

6)      Do they tend to win or lose electrons in their last level?

7)      Which are the properties of the Noble Gases?

8)      Do they tend to win or lose electrons in the last level?

9)     Have a look at the following page, and then answer the questions below:

http://phet.colorado.edu/en/simulation/molecule-polarity

 If two elements in a compound have the following difference in electronegativity, which kind of bonding will they form?

  1. Electronegativity difference: 0 to 0.5 = bonding: ……………………………
  2. Electronegativity difference: 0.6 to 1.7 = bonding: …………………………
  3. Electronegativity difference: 1.8 to 4.0 = bonding: …………………………

10)  Give the general formula for the oxides of elements belonging in group 2

11)  Give the general formula for the Chlorides of elements in group 3

12)  Give the general formula for the Sulphides of the elements in group 1.

13)  Give the general formula of the sulphates for elements in group 1

14)  Give the general formula of the sulphates for elements in group 1

15)  Which are the properties of Ionic Compounds?

16)  Which are the properties of Covalent compounds?

17)  Only …………………..compounds form molecules.

18)   Balancing an equation is a way to prove the Law…….………….

19)  Calculate the mass of the following compounds:

  1. 3 moles of Neon gas
  2. 4.5 moles of Nitrogen gas
  3. 2 moles of Calcium Sulfide
  4. 0.5 moles of Carbon-12
  5. 0.15 moles of Aluminum Sulfate

20)  Calculate the moles of the following substances:

  1. 35 g of Sodium Chloride
  2. 22 g of Potassium bicarbonate
  3. 55 g of aluminum Sulfide
  4. 98 g of Sulphuric acid
  5. 20 g of Argon gas.

21)  Naming ionic and covalent compounds:

  1. (NH4)2 SO4
  2. Fe PO4
  3. (Ca)3 (PO4)2
  4. NH4OH
  5. Al (OH)3
  6. NaCl
  7. Al2O3
  8. CCl4
  9. CO
  10. HNO3
  11. NH3
  12. H2SO4
  13. Al2S3
  14. NH4Cl
  15. K2O
  16. H2

22)  Balance the following chemical equations

 

  1. H2 + O2H2O
  2. H2 + N2NH3
  3. Al2O3Al + O2
  4. KClO3KCl + O2
  5. S8 + O2SO2
  6. C2H6 + O2CO2 + H2O
  7. Al2(SO4)3 + Ca(OH)2Al(OH)3 + CaSO4
  8. P4 + O2P2O5
  9. Ag + S8Ag2S
  10. Al + Br2AlBr3
  11. Cr + O2Cr2O3
  12. NaClO3NaCl + O2
  13. AlBr3 + Cl2AlCl3 + Br2
  14. Na + H2O → NaOH + H2
  15. AlI3 + HgCl2AlCl3 + HgI2
  16. Ca(OH)2 + H3PO4Ca3(PO4)2 + H2O
  17. AgNO3 + K3PO4Ag3PO4 + KNO3
  18. C3H8 + O2CO2 + H2O
  19. C2H2 + O2CO2 + H2O
  20. C6H6 + O2CO2 + H2O

23)   What is the percentage of Oxygen and Aluminum  in aluminum oxide (Al2O3)

24)  Which is the correct formula for the following elements?

  1. Copper (I) Chloride
  2. Aluminum Sulfate
  3. Ammonium Hydroxide
  4. Potassium Hydroxide
  5. Diphosphorous Pentachloride
  6. Silver Nitrate
  7. Mercury(II) Phosphide
  8. Gallium Bromide
  9. Iron (III) Bromate

25)  Which type of molecules will have the following intermolecular forces?

  1. DIPOLE - DIPOLE
  2. TEMPORARY DIPOLE – INDUCED DIPOLE
  3. HYDROGEN BONDS
  4. LONDON FORCES

26)  Indicate if the following forces are INTERMOLECULAR or INTRAMOLECULAR

  1. HYDROGEN BOND
  2. LONDON FORCES
  3. COVALENT BOND
  4. METALLIC BOND
  5. IONIC BOND

27)  Describe the properties of solids liquids and gases based on the particle model.

28)  2.7 g of a compound has 2.4 g of C and the rest is H. Its molecular mass of 135 g/mol.

  1. What is the empirical formula of the compound?
  2. What is the molecular formula of this compound?

29)   Give an example of the following types of reaction:

  1. Double displacement
  2. Single displacement
  3. Combustion
  4. Syntesis (or composition)
  5. Decomposition

30)  What type of ions will the elements if the following groups will form?

  1. Group 1
  2. Group 2
  3. Group 3
  4. Group 5
  5. Group 6
  6. Group 7
  7. Group 8
   
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