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Exam 1
Intro to Chemistry Ch. 1 - 4
16
Chemistry
Undergraduate 2
02/21/2011

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Cards

Term
Matter
Definition
"stuff" anything that has mass and occupies space
Term
Pure substances
Definition
only a single type of matter is present
Term
Mixtures
Definition
two or more pure substances are intermingled with eachother
Term
Homogeneous mixtures/solution & what is an example?
Definition
composition of mixture is identical throughout. Ex: sugared tea, air.
Term
Heterogenous mixture & an example of it
Definition
composition is not the same throughout. Ex: mixture of table salt and sugar, granite
Term
Elements
Definition
basic building blocks of matter
Term
How many elements are there?
Definition
118
Term
Elemental substance & an example
Definition
made from atoms of just one element. ex: pure gold
Term
Atom
Definition
the smallest possible piece of an element
Term
Compound
Definition
pure substances made from atoms of two or more different elements. ex: water
Term
Chemical formula
Definition
indicates the number of atoms of each element that make up the smallest possible piece of that compound.
Term
Physical transformation
Definition
one that leaves it as the same substance but in a different physical state
Term
What are the states of matter?
Definition
solid, liquid, gas
Term
Vaporization
Definition
the change from liquid to vapor
Term
Condensation
Definition
the change from vapor to liquid
Term
sublimation
Definition
from solid to gas
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