hypothesis, prediction, testing, data checking, evidence.
Particle model: The model that describes the structure of matter
What are things about solids in particle theory?
Particles in solids are closely packed together and have strong forces of attraction between them. They vibrate in fixed positions and have a definite shape and volume.
What are things about liquids in particle theory?
Fluidity, ability to flow, takes the shape of its container, particles are close together but can move past each other.
What are things about gases in particle theory?
Particles in gases are in constant random motion, have no limit on volume, and exert pressure when they collide with each other or the walls of their container.
Density: The mass of a certain volume of material
Units for density: kg/m³ or g/cm³
Brownian motion: The random movement of particles in a liquid or gas.
Dilution: The process of reducing the concentration of a solution by adding a solvent.
