If 3000 J of thermal energy is used to heat 1.5 kg of water with a specific heat capacity of 4200 J/kg°C, what is the resulting temperature change (Temperature changes in a system and specific heat capacity)

The correct answer is 0.4°C.

Comparison lens: State both sides of the comparison so the contrast is explicit rather than implied. This question asks: If 3000 J of thermal energy is used to heat 1.5 kg of water with a specific heat capacity of 4200 J/kg°C, what is the resulting temperature change (Temperature changes in a system and specific heat capacity). The correct response is 0.4°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 calculate mass when thermal energy change, specific heat capacity and temperature change are known. 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 305 is distinct because it uses this exact question context and the comparison lens rather than a generic particle-model sentence.