The Particle Theory
What is a particle?
A tiny piece of matter we cannot see.
When a liquid changes to a solid, it is called?
Freezing
Pizza
(Mechanical) Mixture
The term for what dissolves sugar in a solution
Solvent
The science term meaning "to mix completely"? What a solute does in a solvent
Dissolve
Particles move faster when this happens to them.
When they are heated.
This state of matter has a fixed shape.
Solid.
Salt
Pure Substance
How can you increase the solubility of of a solvent?
Heat the solvent
Identify the solute in our saturation experiment.
Sugar
Particles are doing this all the time.
Moving
Which two states of matter can flow?
Liquid and Gas.
Air
Mixture (Solution)
The term meaning “able to dissolve”
Soluble
Name two substances that are insoluble.
Oil, sand, rocks, paper, flour, etc.
True or False: Particles in a solid are touching.
False - All particles have empty spaces between them.
In which state of matter are the particles farthest apart?
Gas.
Aluminum Foil
Pure Substance
The term used when a solute can no longer dissolve and is piling up on the bottom
Super Saturated
When a solution is "full" and cannot dissolve any more solute, we say it is...?
Saturated
The Particle Theory states this about particles in a pure substance.
Particles are identical (all the same) in a pure substance.
According to Particle Theory, why can sugar mix with water?
There is space between the water particles AND there are forces of attraction between the particles.
Tap Water
Mixture (Solution)
What are 2 ways for make a solute dissolve faster?
Stirring and heating the solvent
You can add solvent to make a solution thinner or weaker. This is called...?
Diluting