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Properties and Changes of Matter

Properties and Changes of Matter. Chapter 19 Green Book p. 544-574. Physical and Chemical Properties. Physical Properties – character-istics that you can observe without changing or trying to change the composition of the substance.

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Properties and Changes of Matter

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  1. Properties and Changes of Matter Chapter 19 Green Book p. 544-574

  2. Physical and Chemical Properties • Physical Properties –character-istics that you can observe without changing or trying to change the composition of the substance. • Chemical Properties – a char-acteristic that cannot be observed without altering the substance.

  3. What are the Physical Properties? • Can be detected with your senses. • Color • Shape • Texture • Odor • Taste

  4. Physical Properties • State of Matter • Solid • Liquid • Gas • Plasma

  5. Physical Properties • Size Dependent Properties • Volume • Mass • Dimensions (width, height, length)

  6. Physical Properties • Size Independent Properties • Density - (mass/volume) • Solubility – the number of grams of one substance that will dissolve in 100g of another substance at a certain temperature. • Melting and Boiling Point

  7. Physical Properties • Behavior • Magnetism

  8. Chemical Properties • The ability of a substance to undergo a change that alters its identity. • Burning

  9. Physical Changes • The form or appearance of a substance changes, its composition stays the same. • Changing Shape-cut, tear, grind, bend • Dissolving • Changing state of matter – solid, liquid, and gas

  10. Chemical Changes • Substances are changed into different substances • Rust, tarnish, oxidation • Change of color – fruit turns brown • Gain or release of energy • Change in Odor • Formation of a gas or solid • Not easily reversed

  11. Law of Conservation of Mass • The form or the composition of the matter changes. • The particles within the matter rearrange to form new substance. • Particles are not destroyed and new particles are not created. • The number and type of particles remains the same. • The total mass of the matter is the same before and after a physical or chemical change.

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