Chapter 1
Chemistry 103 with Professor Arnold at Indiana University-Bloomington
About this deck
By: Kelsey Miklos
Created: 2011-09-13
Size: 28 flashcards
Views: 10
Created: 2011-09-13
Size: 28 flashcards
Views: 10
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Chemistry
study of matter and the changes it undergoes
Matter
Anything that has mass and occupies space
Scientific Method
1. Gather Data via observations & experiments
2. Study to identify patterns and trends
3. summerize the trends in a LAW
4. form a HYPOTHESIS
5. if correct, evolve into a THEORY
2. Study to identify patterns and trends
3. summerize the trends in a LAW
4. form a HYPOTHESIS
5. if correct, evolve into a THEORY
hypothesis
a tentative explanation for an observation
theory
a unifying principle that explains a body of experimental observations & the laws that are based on them
Substance
has a definite and constant composition and distinct properties
States of Matter
Solid, liquid, and gas
Solid
particles are close together in an orderly fashion and no motion freedom
liquid
particles are close together but with freedom to move
gas
particles are spaced out, expand to fill volume of container
element
a substance that cannot be seperated into simpler substances by chemical means
compounds
made up of two or more elements in a fixed proportion called constituent elements
mixture
a combo of two or more substances in which the substances retain their distinct identities
homogenous
uniform throughout
heterogeneous
not uniform throughout
quantitative
measurements that are numbers
mass
measure of the amount of matter
weight
force extended by a sample due to gravity
Kelvin
absolute temperature scale, lowest possible temp is 0 K
K=C+273.15
K=C+273.15
Physical properties
can be observed and measured w/o changing the identity of substance
chemical properties
chemical change is brought about by a chemical process
extensive properties
depends on amount of matter
intensive properties
does not depend on the amount of matter,
ex) density and volume
ex) density and volume
exact number
counted,
ex) 1 dozen = 12, 2.54cm=1inch
ex) 1 dozen = 12, 2.54cm=1inch
inexact number
measured figures, not exact because the measuring devices might not be right
Sig Fig Rules
1. any digit that is not zero is significant
2. zeros located between nonzeros are significant
3. zeros to the left of the first non zero are NOT significant
4. zeros the right of the last non zero are significant if there is decimal point
2. zeros located between nonzeros are significant
3. zeros to the left of the first non zero are NOT significant
4. zeros the right of the last non zero are significant if there is decimal point
accuracy
how close a measurement is to the true value
precision
how closely the multiple measurements of the same thing are to another
About this deck
By: Kelsey Miklos
Created: 2011-09-13
Size: 28 flashcards
Views: 10
Created: 2011-09-13
Size: 28 flashcards
Views: 10
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
Kathy