Chemistry Test Questions

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  • Published : April 29, 2013
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* Question 1
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| Which bond or interaction would be difficult to disrupt when compounds are put into water?Answer| | | | | Selected Answer:|  A. hydrogen bond|
Correct Answer:|  C. covalent bond|
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* Question 2
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What is the atomic number of the cation formed in the reaction illustrated above?Answer| | | | | Selected Answer:|  D. 11|
Correct Answer:|  D. 11|
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* Question 3
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| Which of the following best describes the logic of scientific inquiry?Answer| | | | | Selected Answer:|  B. If my hypothesis is correct, I can expect certain test results.| Correct Answer:|  B. If my hypothesis is correct, I can expect certain test results.|

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* Question 4
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How many electrons does an atom of sulfur have in its valence shell (see the figure above)?Answer| | | | | Selected Answer:|  A. 16|
Correct Answer:|  C. 6|
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* Question 5
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Based on electron configuration, which of these elements in the figure above would exhibit a chemical behavior most like that of oxygen?Answer| | | | | Selected Answer:|  E. sulfur|
Correct Answer:|  E. sulfur|
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* Question 6
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| An atom has 6 electrons in its outer shell. How many unpaired electrons does it have?Answer| | | | | Selected Answer:|  A. 0|
Correct Answer:|  D. 2|
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* Question 7
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| When applying the process of science, which of these is tested?Answer| | | | | Selected Answer:|  D. a hypothesis|
Correct Answer:|  D. a hypothesis|
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* Question 8
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| Carbon dioxide (CO2) is readily soluble in water, according to the equation CO 2 + H2O  H2CO3. Carbonic acid (H2CO3) is a weak acid. If CO2 is bubbled into a beaker containing pure, freshly distilled water, which of the following graphs correctly describes the results?Answer| | | | | Selected Answer:|  B. |

Correct Answer:|  C. |
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* Question 9
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| Nitrogen (N) is much more electronegative than hydrogen (H). Which of the following statements is correct about the atoms in ammonia (NH3)?Answer| | | | | Selected Answer:|  A. Each hydrogen atom has a partial positive charge; the nitrogen atom has a partial negative charge.| Correct Answer:|  A. Each hydrogen atom has a partial positive charge; the nitrogen atom has a partial negative charge.|

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* Question 10
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| What factors are most important in determining which elements are most common in living matter?Answer| | | | | Selected Answer:|  C. the relative abundances of the elements in Earth's crust and atmosphere| Correct Answer:|  E. both the relative abundances of the elements and the emergent properties of the compounds made from these elements|

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* Question 11
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| Liquid water's high specific heat is mainly a consequence of theAnswer| | | | | Selected Answer:|  D. fact that water is a poor heat conductor.| Correct Answer:|  E. absorption and release of heat when hydrogen bonds break and form.|

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* Question 12
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| In the term trace element, the modifier trace means thatAnswer| | | | | Selected Answer:|  C. the element can be used as a label to trace atoms through an organism's metabolism.| Correct Answer:|  D. the element is required in very small amounts.|

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* Question 13
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| Why does ice float in liquid water?Answer| | | |
| Selected Answer:|  A. The ionic bonds between the molecules in ice prevent the ice from sinking.| Correct Answer:|  B. Hydrogen bonds stabilize and keep the molecules of...
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