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

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