Chapter 3: Notes 2
Unit:1
Topic: Matter
Book Section(s):3.3 and 3.4
Date: 2/10/09
Cue
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Notes
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3.3 "Elements and Compounds"
Element-
Compounds-
3.4 "Mixtures and Pure Substances"
Mixture-
Pure Substance-
Homogeneous Mixture-
Heterogeneous Mixture-
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a substance that cannot be decomposed into simpler substances by chemical or physical means. (ex. iron, aluminum, oxygen, & hydrogen)
a substance with constant composition that can me broken down into elements by chemical processes. (ex. water)
- a compound always has the same composition or combonation of atoms.
something that has variable composition. (ex. wood, wine, water pumped from deep in the earth)
either an element or a compound; always has the same composition (ex. pure water H2O)
a mixture that is the same throughout (ex. salt stirred into water)
A mixture with different sections that have different properties (ex. sand and water)
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Summary:
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