CHEM 132 - Chapter 1-Kotz - Lecture Notes

CHEM 132 - Chapter 1-Kotz - Lecture Notes - I The Study of...

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Unformatted text preview: I. The Study of Chemistry A. The Molecular Perspective of Chemistry – Studying the properties and behavior of matter • the physical material of the universe – It is anything that has mass and occupies space – It is comprised of combinations of only about 100 very basic substance called elements . – Provides a background to understanding the properties of matter in terms of atoms • the almost infinitesimally small building blocks of matter – Atoms can combine to form molecules (chemical combination of atoms) – First Assignment: Learn the names and symbol for the first 48 elements by Friday. Oxygen Carbon Dioxide Ethylene glycol Ethanol Aspirin Water • Why Study Chemistry? – It provides an important understanding of our world and how it works • Improvement of health care • Conservation of natural resources • Protection of the environment • Increased food production • Development of new materials – It is, by its very nature the central science • Astronomy, atmospheric science, biology, geology, environmental science, medicine, physics, material science, and polymers – The language of chemistry is a universal scientific language • How Do I Study Chemistry? – It takes lots of practice--homework, reviewing notes, reading the text. – It is different than some other disciplines • MICHELANGELO Buonarroti, Italian painter, sculptor and architect (1475-1564). If a block of marble were at the front of this room I suspect we would select Michelangelo to teach us this art form. • Antoine Lavoisier (1743-1794:guillotined) is called the Father of Modern Chemistry but he thinks water’s formula is HO. He knows of about a dozen elements, nothing about polymers, nuclear chemistry, ceramics, etc. – You must study differently for chemistry--study nearly every day. The best predictor of your final grade is your grade on the first exam. B. Classifications of Matter • States of Matter – a gas, a liquid, or a solid – states of matter differ in some of their simple observable properties • gases (vapors) have no fixed volume or shape. They can be compressed to occupy a smaller volume or allowed to expand to occupy a larger volume • liquids have a distinct volume independent of the container that they occupy. They assume the shape of the portion of the container they occupy • solids have a definite shape and a definite volume • Pure Substances – Most forms of matter are not chemically pure • air • gasoline • Sidewalks – Pure substances have distinct properties and a composition that does not vary from sample to sample • All substances are elements or compounds – elements cannot be decomposed into simpler substances » carbon, helium, iron, oxygen, chlorine, etc ....
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This note was uploaded on 04/08/2008 for the course CHEM 132 taught by Professor Holt during the Fall '06 term at UNC Asheville.

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CHEM 132 - Chapter 1-Kotz - Lecture Notes - I The Study of...

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