422-004+week+2+class+notes

By the **Halides** Group (Chemistry 21, Section 422-004)
 * __WEEK 2 NOTES__**

//What is Chemistry?//

__**Chemistry-**__ The study of matter, the composition of matter, and the reactions of matter.

__**Chemistry Reaction-**__ When two or more objects of matter combine.

//What does this equation mean?//
 * 3CuCl2+2Al→2AlCl3+3Cu**

__**3CuCl2+2Al**__ = This part of the equation is the reactants.

__**→**__= This symbol means //becomes, yields, reacts, to form, to create, and to make.//

__**2AlCl3+3Cu**__= This part of the equation is the products.

The equation, **3CuCl2+2Al→2AlCl3+3Cu**, translates into:
 * Copper Chloride and Aluminum reacts to form Aluminum Chloride and Copper.**

__**Elements**__- The most simplest and most pure substance. It cannot be broken down further.

__**Atoms**__- The smallest particle that is still considered as an element.

__**Extensive** **Properties**__**-** Properties that depend on the amount of matter that is present.

__**Intensive** **Properties**__- Properties that do not depend on the amount of matter present.

__**Homogeneous-**__ This means that the matter is the same.

__**Heterogeneous-**__ This means that the matter is different.

End of week 2 notes.

Dr. Reich is as cool as Tom Brady. =__**Posted by Mike Morris** **(Halides** Group Chemistry 21, Section 422-004)__=