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Properties & Changes in Matter Extensive vs. Intensive Physical vs. Chemical. Extensive vs. Intensive. Extensive Property depends on the amount of matter present Intensive Property depends on the identity of substance, not the amount. Extensive vs. Intensive. Examples: boiling point
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Properties & Changes in Matter Extensive vs. Intensive Physical vs. Chemical
Extensive vs. Intensive • Extensive Property • depends on the amount of matter present • Intensive Property • depends on the identity of substance, not the amount
Extensive vs. Intensive • Examples: • boiling point • volume • mass • density • conductivity intensive extensive extensive intensive intensive
Physical vs. Chemical • Physical Property • can be observed and measured without changing the identity of the substance • Chemical Property • can be observed by changing the identity of the substance
Physical vs. Chemical • Examples: • melting point • flammable • density • magnetic • tarnishes in air physical chemical physical physical chemical
Physical vs. Chemical • Physical Change • changes the appearance of a substance without changing its identity • properties remain the same • Chemical Change • changes the identity of a substance • products have different properties
Physical vs. Chemical • Signs of a Chemical Change • change in color or odor • formation of a gas (bubbling, fizzing) • formation of a precipitate (a solid that separates from solution) • change in light or heat
Physical vs. Chemical • Examples: • rusting iron • dissolving in water • burning a log • melting ice • grinding spices chemical physical chemical physical physical