This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Chemistry measurement
Prompt focus: In the metric system, which prefix means one thousandth of a unit?
Why the correct answer works
Milli
Correct. The prefix milli means one thousandth of a unit.
Why the tempting wrong answer fails
The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.
Plain-language takeaway
The prefix milli means one thousandth, so a milliliter is one thousandth of a liter and a milligram is one thousandth of a gram.
Simple analogy
Think of chemistry measurement like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.