Chm Exam

Grading Summary |

These are the automatically computed results of your exam. Grades for essay questions, and comments from your instructor, are in the "Details" section below. | Date Taken: | 2/8/2012 |

Time Spent: | 1 h , 05 min , 01 secs |

Points Received: | 96 / 100 (96%) |

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Question Type: | # Of Questions: | # Correct: |

Multiple Choice | 50 | 48 |

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Grade Details |

1. | Question : | A solution is an example of a (an) |

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| Student Answer: | | pure substance |

| | | element |

| | | compound |

| | | homogeneous mixture |

| | | heterogeneous mixture |

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| Points Received: | 2 of 2 |

| Comments: | |

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2. | Question : | Which statement below accurately describes the contributions of Thomson? |

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| Student Answer: | | ancient Greek philosopher who proposed that matter was continuous |

| | | created the modern periodic table |

| | | proposed the modern Atomic Theory |

| | | discovered the existence of electrons |

| | | none of these |

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| Points Received: | 2 of 2 |

| Comments: | |

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3. | Question : | Which of the following is not part of Dalton's Atomic Theory? |

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| Student Answer: | | Each element is composed of tiny indestructible particles called atoms. |

| | | All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements. |

| | | Atoms combine in simple, whole-number ratios to form compounds. |

| | | Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus. |

| | | All of the above are part of the atomic theory. |

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| Points Received: | 2 of 2 |

| Comments: | |

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4. | Question : | Which of the following species is a molecular element? |

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| Student Answer: | | neon |

| | | sulfur |

| | | chlorine |

| | | carbon dioxide |...