Grade 12 Physics: Particle Model
Explore the fundamental concepts of the particle model, including states of matter, kinetic theory, and energy transfer at a Grade 12 level.
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Grade 12 Physics: Particle Model
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Read each question carefully and answer to the best of your ability. Show all your work for calculation questions.
1. Which of the following statements best describes the particles in a gas?
Particles are closely packed and vibrate in fixed positions.
Particles are randomly arranged and can slide past each other.
Particles are far apart and move randomly and rapidly.
Particles are held in a rigid lattice structure.
2. The average kinetic energy of the particles in a substance is directly proportional to its:
Volume
Pressure
Temperature (in Kelvin)
Density
3. According to the kinetic theory of gases, gas particles are in constant, random, and motion.
4. The process by which a solid changes directly into a gas without passing through the liquid state is called .
5. In a liquid, the intermolecular forces are strong enough to hold particles in fixed positions.
True
False
6. Increasing the pressure on a gas at constant temperature will increase the frequency of collisions between gas particles and the container walls.
True
False
7. Explain how the particle model accounts for the compressibility of gases compared to liquids and solids.
8. Describe the relationship between the temperature of a substance and the kinetic energy of its constituent particles.
9. Observe the diagram below showing the particle arrangement of different states of matter. Identify which diagram represents a solid, a liquid, and a gas.
Diagram A:
Diagram B:
Diagram C:
10. Discuss the limitations of the ideal gas model and in what conditions real gases deviate significantly from ideal behavior. Provide specific examples.