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Ch1 Notes - Chem 1131 Material Type: Notes; Class: Anatomy & Physiology; Subject: Biology / Biological Sciences; University: University of Central Missouri; Term: Forever 1989;
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Principles of Chemistry: A Molecular Approach , 1
st
Ed.
Nivaldo Tro
are submicroscopic particles
are the fundamental building blocks of all matter
two or more atoms attached together in a specific geometric
arrangement
(^) attachments are called bonds
Attachments(bonds) have different strengths
(^) come in different shapes and patterns
of matter by studying the behavior of atoms and molecules.
The Scientific Approach to
Knowledge
“The sweet taste of soda pop is due to the presence
of sugar.”
Falsifiable by doing an experiment
One test (experiment) may invalidate your hypothesis.
From Specific to General
Observations
Law of conservation of mass : “In a chemical
reaction matter is neither created nor destroyed.”
So you can test the law with experiments.
Relationships between Pieces of the
Scientific Method
(Global application)
a. Fusion/melting
b. Condensation
c. Sublimation
d. Deposition
e. Evaporation
f. Freezing
Answer box
Match the number with corresponding processes in the answer box. Indicate whether
heat is being absorbed or taken away in each of the processes 1-6.
How do these processes relate to the three common states of matter?
plastic
glass
charcoal
packed, but they have some ability to
move around.
being incompressible.
allows liquids to take the shape of their
container and to flow; however, they
don’t have enough freedom to escape
and expand to fill the container.
space, the particles can be
squeezed closer together; therefore,
gases are compressible.
close contact and are moving freely,
gases expand to fill and take the
shape of their container, and will
flow.
types of particles
arrangement of the particles
Attractions between unlike charges/poles and
attachments (bonds) between the particles