The Particle Theory
What is a particle?
A tiny piece of matter we cannot see.
What is Chemistry?
Chemistry is the study of matter and changes in matter.
Pizza
(Mechanical) Mixture
Recycling Facilities use a magnetic drum to separate metals like tin cans and wire hangers from other materials.
Magnetism
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
When you make a pot of coffee, you're using this method of separation to make sure there are no coffee grinds in your cup!
Filtration
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.
Sugar Water
Homogeneous (solution)
Using a strainer to look for gold in a river bed.
Sifting
What is the universal Solvent?
Water
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.
Name 3 homogeneous mixtures
Hot chocolate, Sugar water, apple juice
To make maple syrup, sap is thickened by boiling off excess moisture in a vat for extended periods of time.
Evaporation
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.
What is all matter made up of?
Atoms
Name 3 mechanical mixtures
Soil, cookie dough, OJ with Pulp
Explain how a solute can dissolve into a solvent.
The mixture could be heated. The mixture could be stirred.
You can add solvent to make a solution thinner or weaker. This is called...?
Diluting