A gas has a volume of 4.0 m³ at a pressure of 80,000 Pa. If the volume is decreased to 2.0 m³ while maintaining constant temperature, what is the new pressure of the gas (Pressure in gases (physics only))

160,000 Pa

Definition lens: Give the precise definition, then add a context sentence that shows how it is used. This question asks: A gas has a volume of 4.0 m³ at a pressure of 80,000 Pa. If the volume is decreased to 2.0 m³ while maintaining constant temperature, what is the new pressure of the gas (Pressure in gases (physics only)). The correct response is 160,000 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) Calculate volume when pressure changes 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 558 is distinct because it uses this exact question context and the definition lens rather than a generic particle-model sentence.