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Understanding Properties of Matter: Physical vs. Chemical Aspects

Delve into the characteristics of matter in this chapter, exploring physical properties that can be observed without altering its composition and chemical properties that require changes. Discover how substances exhibit color, shape, texture, and more, along with transformations in state, size, and behavior. Differentiate physical changes like dissolving from chemical changes such as rusting, illustrating the conservation of mass law.

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Understanding Properties of Matter: Physical vs. Chemical Aspects

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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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