Basic Concepts of Chemistry 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. In chemistry, what does a mole define?

Question 2 2. Convert 0.25 m to cm.

Question 3 3. Convert 45,000 mg to kg.

Question 4 4. In a reaction, 25 grams of reactant AB breaks down into 10 grams of product A and an unknown amount of product B. Using the law of conservation of mass, how much does product B weigh?

Question 5 5. In a chemical reaction, 300 grams of reactant A are combined with 100 grams of reactant B. Both A and B react to completion. How much will the product weigh?

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Question 6 6. What is the difference between a balanced equation and an unbalanced equation?

Question 7 7. A 4 L sample of gas is heated from 20 K to 200 K. Its initial pressure was 60 torr. What is its final pressure?

Question 8 8. If a gas with a pressure of 6 atmospheres is cooled from 500 K to 250 K, then what is its final pressure?

Question 9 9. To use Gay-Lussac's Law, which of the following needs to remain constant?

Question 10 10. In chemistry, precision is defined as follows:

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Question 11 11. Jared is practicing for a golf tournament. His normal driver distance is 250 yards. He hits three balls with his driver, and they travel a distance of 190 yards, 195 yards, and 187 yards. Which of the following is true?

Question 12 12. Martin is conducting an experiment. His first test gives him a yield of 5.2 grams. His second test gives him a yield of 1.3 grams. His third test gives him a yield of 8.5 grams. On average, his yield is 5.0 grams, which is close to the known yield of 5.1 grams of substance. Which of the following are true?

Question 13 13. Given the following information, what is the whole number ratio of the mass of oxygen in NO to the mass of oxygen in NO4?

Question 14 14. Which of the following compounds CANNOT demonstrate the law of multiple proportions?

Question 15 15. Which of the following is a correct statement about the compound carbon monoxide (CO)?

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Question 16 16. For a 150 g sample of glucose, there is 60 g of carbon. How many grams of carbon are there for a 300 g sample glucose? The formula for glucose is:

Question 17 17. If you have 100 grams of methanol, and add more to make 200 g of methanol, what happens to the ratios between carbon, hydrogen and oxygen? The formula of methanol is:

Question 18 18. There is a total of 200 g of propane left in a tank. How much carbon in grams, is in 200 g of propane? Propane has the formula:

Question 19 19.

What would be the proportion of OCL, according to the law of reciprocal proportions, based on the following information:

H2 O ratio 1:8

HCl ratio 1:35

Question 20 20. Which of the following best describes the law of reciprocal proportions?

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Question 21 21. What was important about the law of reciprocal proportions?

Question 22 22. Why did Democritus disagree with Aristotle?

Question 23 23. Which of the following was the instrument used for the discovery of the electron?

Question 24 24. What did Rutherford discover in his gold foil experiment?

Question 25 25. Which of the following shows a relationship between units of measurements?

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Question 26 26. Which of the following statements best defines the law of conservation of mass?

Question 27 27. A sample of an ideal gas is heated from 200 degrees Celsius to 400 degrees Celsius. If the initial pressure is 45 torr, then what is the final pressure?

Question 28 28. Susan conducts an experiment five times and gets a solution concentration of 1.9M, 2.1M, 1.8M, 1.9M, and 2.2M. The known concentration of the solution is 2.0M. Which of the following are true about Susan's results?

Question 29 29. Which of the following statements is correct about carbon dioxide (CO2)?

Question 30 30. How much oxygen does the following compound contain?

Basic Concepts of Chemistry 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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