Questions: 20. 그림과 같이 일정량의 기체를 넣고 온도를 높였을 때 나타나는 변화로 옳은 것은? (단, 기체의 압력은 일정 하다.) (1) 입자의 수가 많아진다. (2) 기체의 부피가 늘어난다. (3) 기체의 질량이 작아진다. (4) 입자의 운동이 둔해진다. (5) 입자 사이의 거리가 가까워진다.

Solution Steps

The problem involves a gas in a container where the temperature is increased while keeping the pressure constant. We need to determine which change occurs as a result.

1. The number of particles increases.
2. The volume of the gas increases.
3. The mass of the gas decreases.
4. The motion of the particles becomes more vigorous.
5. The distance between particles decreases.

According to the kinetic theory of gases and the ideal gas law (PV = nRT), if the temperature (T) increases while the pressure (P) remains constant, the volume (V) must increase. Additionally, the kinetic energy of the gas particles increases, making their motion more vigorous.

Final Answer