Hl Chemistry Mid-term Form (4)

  • Grade 9th,
  • Grade 10th,
  • Grade 11th
  • IB HL
  • AP Chem
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Quizzes Created: 2 | Total Attempts: 368
| Attempts: 211 | Questions: 45 | Updated: May 8, 2025
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Question 1 / 46
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1. _____ + _____

Explanation

The given answer suggests that the blanks should be filled with "calcium ethanoate" and "water" twice, resulting in the sequence "calcium ethanoate, water, calcium ethanoate, water". This implies that the two blanks should be filled with the same set of substances, namely calcium ethanoate and water, repeated twice.

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About This Quiz
Hl Chemistry Mid-term Form (4) - Quiz

This mid-term examination for Form 4 HL Chemistry assesses knowledge through multiple-choice questions, covering essential chemical concepts and theories.

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2. _____

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3. Choose the best answer:

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4. Choose the best answer:

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6. Which one do you like?

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7. Choose the best answer:

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8. Choose the best answer:

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9. Choose the best answer:

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12. Choose the best answer:

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13. Which one do you like?

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14. Choose the best answer:

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15. Which one do you like?

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16. _____

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17. Choose the best answer:

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18. Choose the best answer:

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19. Choose the best answer:

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20. State the colour of each indicator with Ammonia: 1- Universal indicator _____ 2- Methyl Orange _____

Explanation

The universal indicator turns blue in the presence of ammonia, indicating the presence of a base. Methyl Orange turns yellow in the presence of ammonia, indicating a higher pH value.

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21. Choose the best answer:

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22. Choose the best answer:

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23. Which one do you like?

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24. Choose the best answer:

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25. Which one do you like?

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26. Match the following salts for their solubility

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27. Choose the best answer:

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28. Which one do you like?

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29. Choose the best answer:

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30. Choose the best answer:

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31. Choose the best answer:

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32. Choose the best answer:

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33. For the salt (Y)  prepared below, the solid X is _____ (soluble , insoluble) and the salt Y is _____ (soluble , insoluble).

Explanation

The solid X is insoluble because it does not dissolve in the given solution. On the other hand, the salt Y is soluble because it dissolves in the given solution.

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34. Choose the best answer

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35. Choose the best answer:

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36. Choose the best answer:

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37. Choose the best answer

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38. Choose the best answer:

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39. Match the following

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40. Choose the best answer:

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41. Match the following

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42. What is the energy change for this reaction? _____ KJ/mol

Explanation

The energy change for this reaction is -97 KJ/mol. This means that the reaction releases 97 kilojoules of energy per mole of reactant. The negative sign indicates that the reaction is exothermic, meaning it releases heat.

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43. In the graph below, the rate of reaction at point C is the  _____ (slowest, fastest, zero) because the amount of reactants particles is _____ (maximum, minimum, zero).

Explanation

The rate of reaction at point C is zero because there are no reactant particles present at that point. As a result, no reaction can occur, leading to a rate of zero.

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44. In the graph below, the rate of reaction at point A is the  _____ (slowest, fastest, zero) because the amount of reactants particles is _____ (maximum, minimum, zero).

Explanation

At point A in the graph, the rate of reaction is the fastest because it has the steepest slope, indicating a rapid change in the concentration of reactants over time. This suggests that the reaction is occurring at a high rate. Additionally, the amount of reactant particles at point A is at its maximum, as indicated by the highest point on the graph. This means that there are a large number of reactant particles available to participate in the reaction, further supporting the idea that the reaction is happening at a fast rate.

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45. What is the bond energy of the C=O bond? _____

Explanation

The bond energy of the C=O bond is 841 kJ/mol. This means that it requires 841 kJ of energy to break one mole of C=O bonds. The +841 indicates that this value is for the reverse reaction, where the C=O bond is formed and releases 841 kJ of energy.

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_____ + _____
_____
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Which one do you like?
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_____
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State the colour of each indicator with Ammonia: ...
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Which one do you like?
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Which one do you like?
Match the following salts for their solubility
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Which one do you like?
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For the salt (Y)  prepared below, ...
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Match the following
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Match the following
What is the energy change for this reaction? _____ KJ/mol
In the graph below, the rate of reaction at point C is the  _____...
In the graph below, the rate of reaction at point A is the  _____...
What is the bond energy of the C=O bond? _____
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