A substance absorbs 3000 J of thermal energy, resulting in a temperature increase of 15 °C. If the mass of the substance is 2 kg, calculate the specific heat capacity of the substance (Temperature changes in a system and specific heat capacity)

100 J/kg°C

Definition lens: Give the precise definition, then add a context sentence that shows how it is used. This question asks: A substance absorbs 3000 J of thermal energy, resulting in a temperature increase of 15 °C. If the mass of the substance is 2 kg, calculate the specific heat capacity of the substance (Temperature changes in a system and specific heat capacity). The correct response is 100 J/kg°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 306 is distinct because it uses this exact question context and the definition lens rather than a generic particle-model sentence.