Kinetic Theory Flashcards
When a substance changes state, do its particles also change?
NO
What changes when a substance changes state?
- The arrangement of the particles
- The energy of the particles
In solids, ____ forces of attraction hold the particles ____ ____ in a ____, ____ arrangement.
In solids, strong forces of attraction hold the particles close together in a fixed, regular arrangement.
In solids, particles don’t have much ____ so they can only ____ about their ____ positions.
In solids, particles don’t have much energy so they can only vibrate about their fixed positions.
Are the forces of attraction between particels in liquids stronger or weaker than in solids?
weaker
In liquids, the particles are ____ ____, but can ____ ____ ____ ____, and form ____ arrangments
In liquids, the particles are close together, but can move past each other, and form irregular arrangments
Do particles in liquids have more or less energy than in solds?
More energy
Particles in liquids move in ____ ____ at ____ ____
Particles in liquids move in random directions at low speeds
In gases, there are ____ ____ forces of attraction between the particles
In gases, there are almost no forces of attraction between the particles
Do particles in gases have more or less energy than those in solids and liquids?
More energy
What are the 3 things particles in a gas are free to do?
- Move
- Travel in random directions
- Travel at high speeds
How do you make a solids to melt and liquids to boil?
By heating a substance, which gives its particles more kinetic energy so that they vibrate and move faster
The higher their kinetic energy, the ____ particles can move
The higher their kinetic energy, the faster particles can move
