CHEMISTRY


 * FOURTH TERM 4

** Reviewed by GL: And your sources of information?


 * THIRD BIMESTER 3 **


 * Describe the importance of alloys, plastics and polymers in Society. **

Alloys : is a substance made by melting two or more elements together, at least one of two a metal. Alloy crystalizes upon cooling into solid solution, mixture , or intermediate compound.

It is important for Humans, because we need to see proves of how are the changes in our enviroment or changes around us , in alloys we see that changes.

Plastics : capable of being molded, formed, modeled as clay or plaster ; used also figuratively.Plastics materials are widely consumed in everyday life, but other applications.

Plastics are very important for us because if plastics did not exist we would not be what we are tapers things much easier for the area of our kitchen or we would not have pens that are very useful for our desktop.

Polymers : a product of polymerization, a compound of high molecular weight derived either by the addition of many smaller molecules.

MEDICINE : PLASTIC INDUSTRY : PLASTIC AND GLASS SPORTS : PLASTICS. ALLOYS OPTIONAL WORK! THE IMPORTANCE TO USE DIFFERENT MATERIALS ...IT IS VERY IMPROTANT TO USE DIFFERENT MATERIALS TO OUR DAILY LIVE, NOW A DAYS WE USE A LOT OF PLASTIC IT IS VERY EXPENSIVE FOR US BECAUSE IT IS VERY PRACTIC MATERIAL.

Teacher : Gerardo Lázaro Student: Brenda Belevan

Atoms are composed of three type of particles: Protons have a postive charge. Neutrons have no charge they are neutral. Electrons they have a negative charge.
 * Protons
 * Neutrons
 * Electron