If 5 kg of water is heated and absorbs 2000 J of energy, calculate the specific heat capacity of the water if the temperature change is 10 °C (Changes of state and specific latent heat)

40 J/kg°C

Cause lens: Name the cause, then state the effect on particles, pressure, density, or energy. This question asks: If 5 kg of water is heated and absorbs 2000 J of energy, calculate the specific heat capacity of the water if the temperature change is 10 °C (Changes of state and specific latent heat). The correct response is 40 J/kg°C, because density links mass and volume, so the answer must preserve which quantity is being calculated. In Changes of state and specific latent heat, the marking point should connect directly to calculate specific latent heat when energy transferred and mass 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 412 is distinct because it uses this exact question context and the cause lens rather than a generic particle-model sentence.