Question detail
Which statement would earn credit for Plan a sequence of tests to identify ions in an unknown compound.?
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 identify metal ions in a sample
- B. To measure the temperature of a substance
- C. To determine the pH of a solution
- D. To calculate the concentration of a solution
Answer
The correct answer is To identify metal ions in a sample. It matches chemical analysis because the evidence is test observation and the expected result is supported conclusion.
Explanation
The correct option is To identify metal ions in a sample. 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
Sequence Planning Mistake
Students often fail to consider the order of tests when planning to identify ions in an unknown compound, leading to inconclusive results.
To fix this, students should prioritize tests based on the expected reactivity of ions and ensure that tests do not interfere with each other.
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