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Classifying properties and changes.

Classifying properties and changes. . Classifying Properties. Ask yourself the following questions. How do I know this property exists? Did I touch it? Did I look at it? Did I smell it? Did I hear it? Did I taste it? If you answered yes to any question it is physical.

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Classifying properties and changes.

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  1. Classifying properties and changes.

  2. Classifying Properties • Ask yourself the following questions. • How do I know this property exists? • Did I touch it? • Did I look at it? • Did I smell it? • Did I hear it? • Did I taste it? • If you answered yes to any question it is physical.

  3. If you answered no, it may still be physical. • Did I measure it? • With a ruler? • With a balance or scale? • With a clock or timer? • With a thermometer? • With something that measures volume? • If yes it is probably physical

  4. Last check….. • Did I only know this property exists because I tested it with something else? • If you did not use your senses or a measuring device and you needed to test it with something else. • It is a chemical property

  5. Classifying Changes • Ask yourself the following questions. • What were its physical properties before the change? • Can I still tell that most of them exist? • Can I identify each type of matter that was combined? • Can it be undone easily? • If you answered yes to these questions it is physical.

  6. Classifying Changes • Ask yourself the following questions. • Where the changes expected? • Was the mass greater or lighter then when it started? • Did it get hot or cold without adding heat or taking heat away? If I changed heat was there more used or given off than I put in? • Did the color change seem illogical? • If you answered yes to these questions it is chemical.

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