June 2018 NY Regents Chemistry Exam
39 The table below lists properties of selected elements at room temperature.
Based on this table, which statement describes how two of these elements can be differentiated from each other?
(1) Gold can be differentiated from tungsten based on density. (2) Gold can be differentiated from sodium based on malleability. (3) Sodium can be differentiated from tungsten based on conductivity.
(4) Sodium can be differentiated from iodine based on malleability.
Solution: We need to look at the table given to see which answer is correct. Gold and tungsten have the same density and cannot be differentiated, eliminating choice 1. Gold and sodium are both malleable, eliminating choice 2. Sodium and tungsten both have good conductivity, eliminating choice 3. Sodium is malleable but iodine is not.
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