OAE - Integrated Science: Chemical Changes in Matter Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. A tenth of a mole of pennies contains how many pennies?

Question 2 2. An endothermic reaction is:

Question 3 3. How many moles of solute are in a 0.50 L solution of 3.0 molarity?

Question 4 4. You conduct an experiment that requires the creation of an ammonia solution. You do this by reacting 50.0 L of nitrogen gas with excess hydrogen gas at STP to create ammonia gas using the Haber process given by the following reaction: N2 (g) + 3H2 (g) → 2NH3 (g). Assuming the reaction had 100% yield, you then bubble the ammonia into 5.0 L of water. What is the molarity of the resulting ammonia solution?

Question 5 5. Identify the element which is the strongest reducing agent.

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Question 6 6. An example of a reversible reaction is shown by which of the following?

Question 7 7. What does the coordination number tell you?

Question 8 8. Donna noticed that as she was creating a solution, an acid was formed when a base gained a proton. Which of the following is Donna noticing?

Question 9 9. What does an increase in temperature do to the reaction rate?

Question 10 10. How is reaction rate measured?

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Question 11 11. Which of the following is a strong acid?

Question 12 12. What is unique about the bonds in coordinated compounds?

Question 13 13. The oxidation numbers of H and K in KH are respectively _____ and _____.

Question 14 14. At STP, how much space (in liters) will 0.750 moles of argon gas occupy?

Question 15 15. The pH scale is a way of measuring _______.

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Question 16 16. Identify the function of oxidation numbers.

Question 17 17. What are solubility rules?

Question 18 18. How are oxidation and reduction different?

Question 19 19. When a bond forms, energy is given off to the surroundings. This is an example of

Question 20 20. Enthalpy change is

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Question 21 21. What are the oxidation numbers of the atoms in the compound CF4?

Question 22 22. How is a mole ratio used?

Question 23 23. Why is it beneficial to use a logarithmic scale to measure pH?

Question 24 24. What is formed from a neutralization reaction?

Question 25 25. Where do you look to find the molar ratio?

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Question 26 26. The substance that is reduced in a reaction is also called _____.

Question 27 27. In the complex ion Cu(H2O)2 +, what is the charge on the copper ion?

Question 28 28. If you wanted to decrease the rate of reaction, what action would you need to take?

Question 29 29. What is a coordination compound?

Question 30 30. If 1.605 kg of mercury are used in the reaction 2Hg + O2 --> 2HgO, what is the mass of HgO, in kilograms, that are produced?

OAE - Integrated Science: Chemical Changes in Matter Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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