A gas occupies a volume of 2.0 m³ at a pressure of 100,000 Pa. What will be the pressure if the volume is reduced to 1.0 m³ at constant temperature? Show your working (Pressure in gases (physics only))

The new pressure will be 200,000 Pa.

Practical lens: Link apparatus, readings, and uncertainty to the exact measurement named in the objective. This question asks: A gas occupies a volume of 2.0 m³ at a pressure of 100,000 Pa. What will be the pressure if the volume is reduced to 1.0 m³ at constant temperature? Show your working (Pressure in gases (physics only)). The correct response is The new pressure will be 200,000 Pa., because density links mass and volume, so the answer must preserve which quantity is being calculated. In Pressure in gases (physics only), the marking point should connect directly to (Physics only) Apply the relationship pressure x volume = constant for a fixed mass of gas at constant temperature. 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 Particle model and pressure, 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 542 is distinct because it uses this exact question context and the practical lens rather than a generic particle-model sentence.