Particle model, quick check

Answer 1

The particle model is a simplified representation of matter that considers particles as tiny, indivisible entities. It describes the behavior and interactions of particles, such as their movement, collisions, and changes in state.

Here are a few quick check questions on the particle model:

1. True or False: The particle model assumes that all substances are made up of tiny particles.
2. What are the three main assumptions made in the particle model?
3. True or False: According to the particle model, particles are constantly in motion.
4. What is the main difference between a solid, liquid, and gas according to the particle model?
5. True or False: The particle model can explain changes in state, such as melting and boiling.

Answers:

1. True
2. The three main assumptions are:
- Particles have mass and occupy space
- Particles are in constant motion
- Particles attract each other
3. True
4. In a solid, particles are tightly packed and vibrate in place. In a liquid, particles are still close together but have more freedom to move around. In a gas, particles are far apart and move freely in all directions.
5. True