Humboldt State University ® Department of Chemistry

Richard A. Paselk

Science 331
Fall 2004 Lecture/Activity Office: SA560a
Notes: 13 October Phone: x 5719
Home: 822-1116
e-mail: rap1


Safety Lecture and Quiz

What is Chemistry?

Why Chemistry is often considered the "central science." Examples.

Chemistry is the study of matter and its transformations.

More specifically, chemistry is the scientific study of matter. So what do we mean by science? Two common "definitions":

Let's look at a couple of chemical problems:


What is matter? Stuff. Has mass and occupies space.

Mass: The measure of quantity for matter. Mass is the property of matter resulting in its inertia and and attraction via gravity.

What is matter? Stuff. Has mass and occupies space.


Elements Exercise

Elements are substances which cannot be broken down further into simpler substances.

Atoms are the smallest constituents of elements.

Some important terms which you must know are:

HSU has one of the few display collections of "large" samples of all of the elements with non-radioctive forms (isotopes). Using this display determine the following at "room temperature and pressure":

Sci 331 Home

© R A Paselk

Last modified 13 October 2004