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Matter

Matter. Characteristics. Volume Mass Inertia . Physical Properties. Descriptive : characteristics of a substance. Examples: Magnetic Color Shape Phase Volume Mass density. Chemical properties. Reactive: describes how a substance interacts with another substance. Examples:

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Matter

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  1. Matter

  2. Characteristics • Volume • Mass • Inertia

  3. Physical Properties • Descriptive : characteristics of a substance. • Examples: • Magnetic • Color • Shape • Phase • Volume • Mass • density

  4. Chemical properties • Reactive: describes how a substance interacts with another substance. • Examples: • Reactivity • Flammable • Rusting

  5. Physical changes • Often reversible • Does not result in a new substance • Examples: • Phase changes • Expansion • Contraction

  6. Chemical changes • Not reversible • Always produces new substances • Reactions • Burning • Rusting • Pickling

  7. Pure Substances • Elements: all the same kind of atoms • Compounds: all the same kinds of molecules or formula units

  8. Mixtures • Physical combinations • Retain the properties of what makes them up • Two types: • Heterogeneous: not evenly distributed • Homogeneous: evenly distributed. Think solutions.

  9. Separation • Compounds must be separated chemically • Elements cannot be separated conventionally • Mixtures can be separated physically

  10. Physical separation • Differential physical properties • Solubility • Size • Looks • Magnetic • Density • Volatility

  11. Methods • Filtering • Picking • Chromatography • Centrifugation • Evaporation

  12. Density • Derived quality • Always mass divided by volume • Example: • g/mL

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