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Descriptive Properties of

Descriptive Properties of. Matter. A. Extensive vs. Intensive. Extensive Property depends on the amount of matter present Intensive Property depends on the identity of substance, not the amount. A. Extensive vs. Intensive. intensive extensive extensive intensive intensive. Examples:

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Descriptive Properties of

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  1. Descriptive Properties of Matter

  2. A. Extensive vs. Intensive • Extensive Property • depends on the amount of matter present • Intensive Property • depends on the identity of substance, not the amount

  3. A. Extensive vs. Intensive intensive extensive extensive intensive intensive • Examples: • boiling point • volume • mass • density • conductivity

  4. Density g Mass Volume What are the units for each? Density = g/mL Types of Values mL • Accepted Value – the ‘book’ value, what the value is supposed to be. • Experimental Value – the value found in the lab.

  5. your value accepted value Percent Error • Indicates accuracy of a measurement • A student determines the density of a substance to be 1.40 g/mL. Find the % error if the accepted value of the density is 1.36 g/mL. % error = 2.9 %

  6. Classification of Matter • Mass is the amount of matter the object contains. • Matter is anything that has a mass and volume. • Volume is the amount of space an object takes up. • Examples of things that are not matter: • Light and energy • Picture a Golf Ball and a Ping Pong Ball… Which has more mass? More volume?

  7. Differences between Mass and Weight

  8. Matter’s Changes and Properties • Physical Property • can be observed withoutchanging the identity of the substance • color • texture • density • viscosity • change in state • solubility • malleability • mass • volume • Chemical Property • describes the ability of a substance to undergo changes in identity • A new substance is produced • reactivity • toxicity • pH • conductivity • tarnishing • fermenting • oxidation There are properties that are used to describe matter.

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