Question detail
How does increasing the temperature of a gas affect its particles?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Particle model and pressure
Question
- A. It decreases their average kinetic energy.
- B. It increases their average kinetic energy.
- C. It has no effect on their motion.
- D. It causes them to move slower.
Answer
The correct answer is It increases their average kinetic energy..
Explanation
Exam lens: Write the relationship, substitute values only when needed, and finish by interpreting the result. This question asks: How does increasing the temperature of a gas affect its particles. The correct response is It increases their average kinetic energy., because gas pressure comes from particle collisions with container walls. In Particle motion in gases, the marking point should connect directly to describe gas particles as moving in constant random motion. 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 455 is distinct because it uses this exact question context and the exam lens rather than a generic particle-model sentence.
Common mistake
Misunderstanding Gas Particle Motion
Students often think that gas particles move in a straight line without any change in direction.
Emphasize that gas particles are in constant random motion, frequently changing direction due to collisions with each other and the walls of their container.
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