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Ch. 1 - Matter

Ch. 1 - Matter. III. Properties & Changes in Matter (p.7-10) Extensive vs. Intensive Physical vs. Chemical. A. Extensive vs. Intensive. Extensive Property depends on the amount of matter present Intensive Property depends on the identity of substance, not the amount.

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Ch. 1 - Matter

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  1. Ch. 1 - Matter III. Properties & Changes in Matter (p.7-10) Extensive vs. Intensive Physical vs. Chemical

  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 • Examples: • boiling point • volume • mass • density • conductivity intensive extensive extensive intensive intensive

  4. B. Physical vs. Chemical • Physical Property • can be observed without changing the identity of the substance • Chemical Property • describes the ability of a substance to undergo changes in identity

  5. B. Physical vs. Chemical • Examples: • melting point • flammable • density • magnetic • tarnishes in air physical chemical physical physical chemical

  6. B. Physical vs. Chemical • Physical Change • changes the form of a substance without changing its identity • properties remain the same • Chemical Change • changes the identity of a substance • products have different properties

  7. B. Physical vs. Chemical • Signs of a Chemical Change • change in color or odor • formation of a gas • formation of a precipitate (solid) • change in light or heat

  8. B. Physical vs. Chemical • Examples: • rusting iron • dissolving in water • burning a log • melting ice • grinding spices chemical physical chemical physical physical

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