Chemistry 30s Exam Grade 11

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GRADE 11 CHEMISTRY (30S)
Final Practice Examination Answer Key

GRADE 11 CHEMISTRY (30S)
Final Practice Examination Answer Key

IInstructions
The final examination will be weighted as follows Modules 1–3 Modules 4–6 The format of the examination will be as follows: Part A: Fill-in-the-Blanks Part B: Multiple Choice Part C: Short Answer Total Marks Include units with all answers as required. Useful Information You will need the following in order to complete this examination: n n n n

15–20% 80–85% 22 x 1 = 22 marks 46 x 1 = 46 marks 32 marks 100 marks

writing utensils and eraser or correction fluid some scrap paper a ruler a scientific calculator

You will have a maximum of 2.5 hours to complete your final exam.

Final Practice Examination Answer Key

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Grade 11 Chemistry

Part A: Fill-in-the-Blanks (22 Marks)
Use the Word Bank at the end of this exam to help you complete the “Fill in the Blank” questions. As each blank is worth one mark, some questions will have a total value of two marks. Note that there are MORE terms provided than you need, so read over the list carefully and choose the terms you want to use. The same term may be used more than once in this section. Stoichiometry (4 marks) 1. The calculated amount of product formed during a reaction is called the ____________________ yield. Theoretical 2. For a given chemical reaction, the actual yield is always ____________________ than the theoretical yield. Less / smaller 3. For ____________________ changes, the release of energy is represented by writing the energy term as a product when writing a chemical equation. Exothermic 4. Balanced chemical equations contain important information about the amount of reactants required to produce given products. These amounts are represented by ____________________. Coefficients Solutions (10 marks) 5. A ____________________ is defined as a mixture of two or more substances that are evenly distributed. Solution 6. The shape of the water molecule, combined with the nature of its bonds, makes water a ____________________ molecule. Polar 7. The total heat change in the dissolving process is called the heat of ____________________. Solution 8. Non-polar substances, like waxes and oils, are ____________________ in water. Insoluble / immiscible 9. If a solution could dissolve more solute at a particular temperature, the solution is ____________________. Unsaturated 10. The number of moles of solute dissolved in 1 L of solution is known as ____________________. Molarity / concentration 11. The attraction an atom has for the shared electrons in a covalent bond is called ____________________ . Electronegativity 12. When water surrounds individual molecules or ions, the molecules or ions are said to be ____________________. Hydrated

Final Practice Examination Answer Key

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13. Polar and charged substances dissolve well in ____________________ solvents because of the electrostatic attraction between opposite charges. Polar 14. Adding a solute to a solvent lowers the ____________________ pressure of the solvent. Vapour Organic Chemistry (8 marks) 15. Inorganic compounds do NOT tend to contain ____________________. Carbon 16. Decaying animals and vegetation is a major source of ____________________ compounds. Hydrocarbon 17. When carbon atoms are bonded together in a tetrahedral lattice arrangement, ____________________ is created. Diamond 18. Any alkane with one or more alkyl groups is automatically a ____________________ alkane. Branched-chain 19. Ethene, a simple alkene, can be transformed back into ethane by adding ____________________. Hydrogen 20. All hydrocarbons that do not possess rings are called ____________________ compounds. Aliphatic 21. The functional group that identifies a compound as an alcohol is called the ____________________ group. Hydroxyl 22. The process of forming an ester from a reaction between an organic acid and an ____________________ is called esterification. Alcohol...
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