Question detail

If 500 J of energy is transferred to 2 kg of water, and the specific heat capacity of water is 4200 J/kg°C, what is the temperature change (Temperature changes in a system and specific heat capacity) (Temperature changes in a system and specific heat capacity; definition focus: Identify change in thermal energy in joules, mass in kilograms, specific heat capacity in joules per kilogram per degree Celsius and temperature change in degrees Celsius) (Temperature changes in a system and specific heat capacity; definition focus: Identify change in thermal energy in joules, mass in kilograms, specific heat capacity in joules per kilogram per degree Celsius and temperature change in degrees Celsius)

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

At a glance

MCQ

Type

practice

Style

Topic

Internal energy and energy transfers

Question

  1. A. 0.06°C
  2. B. This confuses specific heat capacity with a different particle-model idea in Internal energy and energy transfers.
  3. C. This gives a vague particle statement without answering the definition focus.
  4. D. This reverses the cause and effect for Temperature changes in a system and specific heat capacity.

Answer

The correct answer is 0.06°C.

Explanation

Comparison lens: State both sides of the comparison so the contrast is explicit rather than implied. This question asks: If 500 J of energy is transferred to 2 kg of water, and the specific heat capacity of water is 4200 J/kg°C, what is the temperature change (Temperature changes in a system and specific heat capacity) (Temperature changes in a system and specific heat capacity; definition focus: Identify change in thermal energy in joules, mass in kilograms, specific heat capacity in joules per kilogram per degree Celsius and temperature change in degrees Celsius) (Temperature changes in a system and specific heat capacity; definition focus: Identify change in thermal energy in joules, mass in kilograms, specific heat capacity in joules per kilogram per degree Celsius and temperature change in degrees Celsius). The correct response is 0.06°C, because density links mass and volume, so the answer must preserve which quantity is being calculated. In Temperature changes in a system and specific heat capacity, the marking point should connect directly to identify change in thermal energy in joules, mass in kilograms, specific heat capacity in joules per kilogram per degree Celsius and temperature change in degrees Celsius. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Internal energy and energy transfers, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 293 is distinct because it uses this exact question context and the comparison lens rather than a generic particle-model sentence.

Common mistake

Confusing Units of Measurement

Students often confuse joules (J) with kilograms (kg) when identifying change in thermal energy and mass.

Always remember that thermal energy is measured in joules (J) and mass is measured in kilograms (kg). Use the correct units for each quantity when solving problems.

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