Introduction to Chemistry
General Chemistry 1
Chemistry is the study of matter, its interactions
and reactions, and the energy associated with
Matter is substance that has mass and volume
all of the objects around us.
Measurement in Chemistry
Observations that describe a substance,
mixture, reaction, or other process in
Observations that describe a property
with NUMBERS and
Avogadro and the MOLE
What is a MOLE?
A cute, burrowing animal?
An overgrowth of epidermal tissue?
A TV show?
It is all these things and more
A mole of anything is 6.02214 x 1023 of that thing.
In Chemistry, we work
Expressing Numbers in
Scientific Notation has you express numbers in
terms of exponentials. An exponential is a
number multiplied by itself a certain number of
43 = 4 x 4 x 4 = 64
106 = 10 x 10 x 10 x 10 x 10 x
Atomic Theory & Isotopes
Theories of Matter Composition
(5th 4th century BC)
(4th 5th century BC)
FOUR ELEMENTS Earth, Air, Fire, Water
Reintroduced ATOMISM in modern times.
% Element =
atomic mass of element x # atoms
molar mass of the compound
Empirical & Molecular Formulas
Calculate the percent phosphorus in
Empirical and Molecular Formulas
Silberberg-Chp. 1: pp. 1-31.
Study tips for success in Chemistry:
Follow-up Problems (at the end of the reading sections): 1-9
Science Lecture / Seminar Requirements & Assignment
As a requirement for the course, you are asked to attend three (3) lectures/
panels/seminars that are presented as part of the Skyline College Science Seminar
Other seminars and lect