Question detail

Explain how to measure the temperature of a solution using a thermometer. What steps should you follow to ensure an accurate reading?

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

Question

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exam_style

Style

Topic

AS practical skills and required practical activities

Question

Explain how to measure the temperature of a solution using a thermometer. What steps should you follow to ensure an accurate reading?

Answer

To measure the temperature of a solution, first, ensure the thermometer is clean and calibrated. Immerse the bulb of the thermometer in the solution without touching the sides of the container. Wait for the reading to stabilize, then record the temperature. Ensure the thermometer is not exposed to direct sunlight or drafts during measurement. This answer is anchored to AS apparatus and techniques.

Explanation

To measure the temperature of a solution, first, ensure the thermometer is clean and calibrated. Immerse the bulb of the thermometer in the solution without touching the sides of the container. Wait for the reading to stabilize, then record the temperature. Ensure the thermometer is not exposed to direct sunlight or drafts during measurement. is the best answer because it directly supports the AQA A-Level Chemistry objective to use apparatus to measure mass, time, volume, temperature and pH. This reasoning is anchored to AS apparatus and techniques in AS practical skills and required practical activities, and it separates apparatus from similar A-Level ideas rather than relying on a vague recall statement. Other options are weaker if they use the wrong evidence, calculation, mechanism, observation, unit, or conclusion for this subtopic.

Common mistake

Incorrect Measurement of Mass

Students often forget to zero the balance before measuring the mass of a substance, leading to inaccurate results.

Always ensure to zero the balance (tare) before placing the container or substance on it. This ensures that only the mass of the substance is measured. For example, if the balance reads 0.00 g after taring, and then you add a solid that weighs 5.00 g, the reading will accurately reflect the mass of the solid.

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