General Chemistry 1 Past Paper PDF

PUNTURIN SENIOR HIGH SCHOOL G E N E RA L C H E M I S T RY 1 PREPARED BY : GILBERT O. MIRALPES  POLYMERIZATION Polymerization is the process of joining together many monomers, the basic building blocks of polymers, to form linear chains or a three-dimensional network of polymer...

PUNTURIN SENIOR HIGH SCHOOL G E N E RA L C H E M I S T RY 1 PREPARED BY : GILBERT O. MIRALPES  POLYMERIZATION Polymerization is the process of joining together many monomers, the basic building blocks of polymers, to form linear chains or a three-dimensional network of polymer chains CONTINUE  CLASSIFICATION OF POLYMER Based on NATURAL POLYMER Origin Found in nature, including in plants, animals, and humans. Examples: Proteins (e.g., silk, collagen) Polysaccharides (e.g., cellulose, starch)  CLASSIFICATION OF POLYMER Based on SYNTHETIC POLYMER Origin Man-made polymers synthesized from petroleum or other chemicals. Examples: Plastics (e.g., polyethylene, PVC) Synthetic fibers (e.g., nylon,  CLASSIFICATION OF POLYMER Based on LINEAR POLYMER Structure Have a straight-chain structure with minimal branching. These polymers can pack closely, making them dense and strong. Example: Polyethylene.  CLASSIFICATION OF POLYMER Based on BRANCHED POLYMERStructure Contain side chains or branches off the main chain, which reduces packing density. Example: Low-density polyethylene (LDPE).  CLASSIFICATION OF POLYMER Based on CROSS-LINKED Structure Chains are connected via covalent bonds, creating a network structure that is often rigid.  CLASSIFICATION OF POLYMER Based on NETWORK Structure highly crosslinked materials in which some of the atom valencies are satisfied by bonds that result in a three-dimensional (3D) structure CLASSIFICATION OF POLYMER  CLASSIFICATION OF POLYMER Based on Polymerization ADDITION POLYMER Process occurs by the repeated addition of monomer molecules which possess triple or double bonds. Example : the formation of ((C3H6)n) polypropene from (C3H6)  CLASSIFICATION OF POLYMER Based on Polymerization CONDENSATION POLYMER Process polymers formed through a condensation reaction— where molecules join together—losing small molecules. In this type of reaction, small molecules such as alcohol, water or hydrogen chloride are eliminated Example : nylon 6, nylon 6, 6, terylene (dacron).  CLASSIFICATION OF POLYMER Based on Thermal THERMOPLASTIC Properties Can be melted and reshaped multiple times. Example: Polyethylene, polystyrene.  CLASSIFICATION OF POLYMER Based on Thermal THERMOSETTING Properties a polymer that is obtained by irreversibly hardening ("curing") a soft solid or viscous liquid prepolymer (resin) becomes hard when heated  CLASSIFICATION OF POLYMER Based on Physical ELASTOMER Properties Rubbery and flexible; they can stretch and return to their original shape. Example: Natural rubber, silicone.  CLASSIFICATION OF POLYMER Based on Physical FIBERS Properties Polymers that can be spun into threads for textiles Example: Nylon, polyester.  CLASSIFICATION OF POLYMER Based on Physical PLASTICS Properties Solid polymers used for packaging, containers, and everyday items Example: PVC, PET. PUNTURIN SENIOR HIGH SCHOOL THANK YOU ! SOARING HIGH PUNTURIN