Question detail
Which statement would earn credit for Describe how flame tests can be used to identify some metal ions.?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Identification of ions by chemical and spectroscopic means
Question
- A. To measure the mass of the metal ion
- B. To observe the color of the flame produced by the metal ion
- C. To determine the solubility of the metal ion
- D. To calculate the concentration of the metal ion
Answer
The correct answer is To observe the color of the flame produced by the metal ion. It matches flame test because the evidence is flame colour and the expected result is metal ion identity.
Explanation
The correct option is To observe the color of the flame produced by the metal ion. The answer stays inside Identification of ions by chemical and spectroscopic means by linking the observation to the conclusion instead of naming a substance without evidence. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Confusing Flame Colors
Students often confuse the flame colors produced by different metal ions during flame tests.
To fix this, students should memorize the specific flame colors associated with each metal ion, such as lithium for crimson, sodium for yellow, and potassium for lilac.
Related flashcards
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