Basics Chapter 1 Dr. Isom Chem 1402 Looking ahead (to - - PowerPoint PPT Presentation

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Dec 16, 2023 256 likes •462 views

Basics Chapter 1 Dr. Isom Chem 1402 Looking ahead (to be completed before next lecture) Chapter 1 problems: 3, 5-7, 38, 44, 46-47, 51-56 Read: Chapter 1.7-1.8, 1.12, 1.14, 6.1-6.2 States of Matter gas liquid

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Basics ¡

Chapter ¡1 ¡

Chem ¡1402 ¡

Dr. ¡Isom ¡

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Looking ahead

(to be completed before next lecture)

Chapter 1 problems: 3, 5-7, 38, 44, 46-47, 51-56 Read: Chapter 1.7-1.8, 1.12, 1.14, 6.1-6.2

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solid liquid gas Atoms close Fixed volume High IF “stickiness” Low kinetic energy Flowable Changes shape Some IF “stickiness” Medium kinetic energy Atoms far apart Compressible Low IF “stickiness” High kinetic energy

States of Matter

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How much do molecules in a sample like each other?

States of Matter

Melting point: Temperature at which a solid turns to liquid Boiling point: Temperature at which a liquid turns to gas

solid liquid gas Temperature Melting Point Boiling Point

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solid liquid gas Temperature Melting Point Boiling Point

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Types of Changes

Physical Change: A change that doesn’t affect chemical makeup of a substance Chemical Change: A change in the chemical composition of a substance

P P C C

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P P C C

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Types of Matter

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Lighter Fluid Metal Alloys Bullet

Homogeneous Mixtures

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Heterogeneous Mixtures

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Healthy Booze???

Tannins are antioxidant molecules found in grape skin and seeds Called Oligomeric Proanthocyanidins

r OPC’s
Help repair collagen and elastin
Maintain blood vessels
Prevent wrinkles
20X more powerful than Vit C and 50X than Vit E
Decrease histamine production

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Allergies and Antihistamines

They bind to white blood cells called B-lymphocytes B-cells make Antibodies (Ab) against the allergen The Ab bind to mast cells and become receptors for the allergens Next time the allergen enters the body, they bind to the Ab bound to the mast cell and cause histamine to be released. The substances that cause an allergic reaction are called allergens or antigens

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Histamine

Mast Cell with histamine granules

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OPC’s Cont.

Fight smoke, alcohol, chemical damage ~~ Free Radicals Internal sunscreen Cross blood-brain barrier Explains French paradox

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Rohypnol

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Aspirin

COX enzyme protein responsible for inflammation helps with blood clotting makes stomach lining

X

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