College Chemistry CHM 2045
PHSC, Porter Campus
Practice Exam 2
1. Please dont turn this page until you are told to do so.
2. You may use the periodic table attached at the end of this exam paper.
3. There are 25 questions in this exam and ans
1. What question can we ask in order to distinguish between a theory and a law?
a) Does the statement concern atoms?
b) Does the statement concern gases?
c) Is the statement comprehensible?
d) Is the statement measurable?
e) Does the statement make sense?
Atoms, Molecules, and Ions
CHM 2045 General Chemistry I
Joseph Louis Proust
of Definite Proportions
Law of Constant Composition
Daltons Atomic Theory
is composed of atoms
Element: One type of atom
Compound: Two or mo
Chemistry: The Central Science
CHM 2045 General Chemistry I
observable reality to
understand the physical
reality guides and decides.
Tested with new
The Structure of Matter and
the Chemical Elements
One doesnt discover new lands without consenting to lose sight of
the shore for a very long time.
French Novelist and Essayist
n this chapter, we begin the journey that will lead you t
Modern Atomic Theory
To see a World in a Grain of Sand
And a Heaven in a Wild Flower
Hold Infinity in the palm of your hand
And Eternity in an hour
William Blake (1757-1827)
An Introduction to Chemical Reactions
ow that you understand the basic structural differences between different kinds 7.1 Chemical Reactions
of substances, you are ready to begin learning about the chemical changes that
More on Chemical Compounds
Please excuse Lisa for being absent; she was sick and I had her shot.
A note to the teacher to explain why a child was absent
e can probably assume that the parent who wrote this note meant the child
was taken to the d
Acids, Bases, and Acid-Base Reactions
ts test day in chemistry classtheyve been learning about acids and basesand
Fran unwisely skips breakfast in order to have time for some lastminute studying.
As she reads, she chews on a candy bar and sips a
n many important chemical reactions, electrons are transferred from atom to atom. 9.1 An Introduction to
We are surrounded by these reactions, commonly called oxidationreduction (or
Chemical Calculations and Chemical
lthough Section 6.7 was full of questions that began with, How much? we
are not done with such questions yet. In Section 6.7, our questions focused
on chemical formulas. For example, we answered such
ook around you. Do you think you see anything composed of just one element
any objects consisting only of carbon, or of gold, or of hydrogen? The correct
answer is almost certainly no. If you are lucky enough to have a diamond
[M]athematics is the easiest of sciences, a fact which is obvious in that
no ones brain rejects it.
Roger Bacon (c. 1214-c. 1294), English philosopher and scientist
Stand firm in your refusal to remain conscious during algebra
An Introduction to Chemistry
I would watch the buds swell in spring, the mica glint in the granite,
my own hands, and I would say to myself: I will understand this,
too. I will understand everything.
Primo Levi (191987)
Italian chemist and autho
General Chemistry And Qualitative Analysis II Laboratory
Webquest 4: Giotto
1) Florence, Italy
3) A series of frescoes (paintings on fresh, still wet plaster) on the life of St.
Francis in the church at Assisi
4) Magnus Magister (Great Master)
5) A sense of space (3D) and more realistic looking subje