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Chemistry jeopardy

Chemistry jeopardy. Question 1. Name and draw the structure of the petroleum fraction that is used to make many organic compounds such as vinyl chloride and ethanediol (2 points). Question 2.

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Chemistry jeopardy

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  1. Chemistry jeopardy

  2. Question 1 Name and draw the structure of the petroleum fraction that is used to make many organic compounds such as vinyl chloride and ethanediol (2 points)

  3. Question 2 ____________ ______________ refers to a reaction that involves the loss of a small molecule when two functional groups become linked together to form a chain.

  4. Question 3 Name 3 factors that can affect the properties of polymers. (3 points)

  5. Question 4 What is the main difference in the molecular structures of LDPE and HDPE?

  6. Question 5 From what monomer are cellulose and starch made from. Draw the monomer (2 points)

  7. Question 6 PHA, PHB and PLA are part of what group of compounds? What organism is needed to produce them? (2 points)

  8. Question 7 Draw the structure of 1,2 – ethanediol.

  9. Question 8 Ethanol can be dehydrated to form ethylene. What catalyst is used to facilitate this reaction?

  10. Question 9 What 3 products are produced during the complete combustion of ethanol? (3 points)

  11. Question 10 Ethanol reacts with alkanoic acids (i.e. Carboxylic acids such as ethanoic acid) to form what type of compounds?

  12. Question 11 A spirit burner containing ethanol is used to heat 250 mL of water in a copper calorimeter (C = 0.387 J /K g) that weighs 316g. The water was heated from 23.60C to 34.80C. Calculate the molar heat of combustion if 2.11g of ethanol was burned.

  13. Question 12 If solid metal X is put into a solution containing metal Y and no reaction occurs, what can you say about the relative activities of these two metals?

  14. Question 13 What is the oxidation state of Cr in the dichromate ion, Cr2O72-?

  15. Question 14 True or False? A specific element can exhibit only one oxidation state.

  16. Question 15 What is the difference between a galvanic cell and an electrolytic cell in terms of electricity?

  17. Question 16 Against what are standard reduction potentials measured?

  18. Question 17 Calculate the cell potential of a cell that contains the following half-cells: Ag E0 = +0.8V Zn E0 = -0.76V

  19. Question 18 Name the three types of radioactive emissions.

  20. Question 19 What is the most important factor in determining the stability of a nucleus?

  21. Question 20 What are transuranic elements and how are they produced? (2 points)

  22. Question 21 Name two properties of acids and two properties of bases.

  23. Question 22 Name one naturally occurring acid.

  24. Question 23 Non-metallic oxides combine with what compound in the atmosphere to form acids?

  25. Question 24 What is the pH of pure rain? Justify this. (2 points)

  26. Question 25 Name one acid/base indicator.

  27. Answers • ethylene, structure (2) • Condensation polymerisation (1) • Length, branching, arrangement of chains, functional grps, cross-linking, additives (3) • LDPE has more branching (1) • Glucose, structure (2) • Biopolymers, bacteria (2) • Structure (1) • Sulfuric acid (1) • Carbon dioxide, water, energy (3) • Esters (1) • 286 kJ/mol (1) • Y is more active than X (1) • +6 (1) • False (1) • Galvanic cell generates electricity, electrolytic requires electricity (2) • Standard hydrogen electrode (1)

  28. Answers • 1.56 V (1) • Alpha, beta, gamma (3) • Neutron to proton ratio (1) • Elements Z>92(U), bombardment with particles (2) • Acids turn blue litmus red, taste sour, conduct electricity, react with active metals, carbonates, bases. Bases turn red litmus blue, conduct electricity, conduct, react with bases and amphoteric metals and metal hydroxides (4) • Ascorbic acid (Vit C), citric acid, benzoic acid (1) • Water (1) • 5.6, carbon dioxide combines with water to form carbonic acid in the atmosphere (2) • Methyl orange, litmus, universal indicator, bromothymol blue, phenolphthalein (1)

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