1/13 & 1/ th Grade Agenda Learning Objective: Learn about Polymers

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Presentation transcript:

1/13 & 1/14 - 8th Grade Agenda Learning Objective: Learn about Polymers Last Day to turn in Late work Collect HW: Reading & Notetaking: p.146 – 147 Science Fair Background Presentations Textbook Reading p. 308 - 318 HW: Reading & Notetaking p.148 – 150 Reminder Procedure, Data Table, Graph & Procedure due 2/5 & 2/6 (15 Points)

Daily Reflection Prompt: Write 3 questions about polymers.

Last day to turn in late work

What is a Isomer? Compounds that have the same chemical formula but different structural formulas are called isomers Butanes and isobutane have different melting points and boiling points

Double Bond Single bond hydrocarbons end in “-ane” like Propane Double Bond hydrocarbons end in “-ene” or “-yne” like Ethene.

Hydroxyl Group Hydroxyl group is a “OH” compound used for substitute for hydrogen atom in hydrocarbons Alcohol is a substituted hydrocarbon that contains one or more hydroxyl group Ethanol is produced natually by yeast when they consure sugar stored in corn, wheat and barley Methanol (poisonous) Ethanol

Polymers vs. Monomers Polymer: A very large molecule (millions of atoms) made of a chain of many smaller molecules. Monomer: Smaller molecule – the links that make up the chain

What are some natural Polymers?

What are some examples of Natural Polymers? Wool Cotton Silk DNA & RNA Protein Carbohydrates Starch

What are some man made Polymers?

What do plastics and cells in your body have in common? They are both made of carbon compounds

What are the four types of polymers found in all living things? Carbohydrates Lipids Proteins Nucleic Acids ???????? ???????? ???????? ????????

Carbons can form four covalent bonds They can also bond to each other in changes and ring shaped groups

What are composites Composites combine two or more substances as a new material with different properties

What is the simplest carbohydrates? Sugar One of the most important sugars in your body is glucose C6H12O6 Glucose is also known as “blood sugar” because it is circulated through out your body

Starch is a form of complex carbohydrate Starch is a form of complex carbohydrate. Which food contains lots of starch? Rice Potatoes Bread Cereal Pasta Wheat