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 science term meaning "to mix completely"?
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
Identify the solute in our fruit juice solution experiment.
The drink crystals.
Particles are doing this all the time.
Moving
Which two states of matter can flow?
Liquid and Gas.
Air
Mixture (Solution)
Name two substances that are insoluble (cannot be dissolved by water).
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
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.
During distillation, we separate a mixture by boiling and evaporating one substance, then changing that gas back to a liquid in a cooling chamber and collecting it. When a gas cools and changes to a liquid it is called...?
Condensation
Tap Water
Mixture (Solution)
You can add solvent to make a solution thinner or weaker. This is called...?
Diluting