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Mixture

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Subject: 
Algebra
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Chemistry
Nature
Universe
Chemical elements
Helium
Chemical substance
Substance theory
Mixture
Gas
Solid
Matter
Chemical reaction

Fundamentals of Chemistry What is Chemistry? What is Matter? How does it change? (How do we organize the types of changes? What categories? How do we categorize the types of matter? We can identify the specific types of matter with its ________ (characteristics). Definition: How many Smallest unit Examples Element: Compound: Mixture: What is the table of elements called? Is a compound considered a pure substance? How is a compound different than a mixture? Is a mixture considered a pure substance? How are mixtures classified? Draw sketches: solid liquid gas Macroscopic Microscopic How do the microscopic models explain the macroscopic properties? Property Solid Liquid Gas Fluidity (fixed shape) Why? Compressibity (fixed volume)

Chapter 1.2 Outline

Subject: 
Chemistry
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Chemistry
Nature
Chemical elements
Condensed matter physics
Chemical substance
General chemistry
Chemical compound
Homogeneous and heterogeneous mixtures
Mixture
Solution
Gas
Liquid

Matter Classified by? Physical State (Gas/ Liquid/ Solid) Composition (Element/ Compound/ Mixture) States of Matter Gas (vapor) No fixed volume or shape Uniformly fills its container Can be compressed to occupy a smaller volume Can be expanded to occupy a larger volume Molecules are far apart, move quickly, and often collide with the surrounding container Liquid Distinct volume (independent of container) No fixed shape (assumes shape of occupied container) Can't be compressed Molecules are packed closely but can still move (they flow over each other, reducing viscosity Solid Definite shape and definite volume Can't be compressed Molecules have fixed positions an wiggle only slightly *Temperature and pressure changes lead to phase changes of the substance

Chapter 1.3 Outline

Subject: 
Chemistry
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Chemistry
Nature
Phase transitions
Mixture
Chemical substance
Chromatography
Solid
Distillation
Melting
Physical change
Characteristic property

Properties can be? Physical - can be observed without changing identity or composition of the substance Ex. Color, odor, Density, Melting Point, Boiling Point, Hardness Chemical - describe the way a substance may change or react to form other substances Ex. Flammability - the ability of a substance to burn in the presence of oxygen Intensive - do not depend on the amount of sample being examined Help to identify substances Ex. Temperature, melting point Extensive - Depend on the amount of sample Help to show quantity of a substance Ex. Mass, volume Physical and Chemical Changes Physical Change - substance changes its physical appearance, but not its composition Changes of state are physical changes Chemical Change - substance changes into a chemically different substance
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