CHEM1001 Lecture Notes - Lecture 10: Intensive And Extensive Properties, Chemical Stability, Combustibility And Flammability
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All properties of matter are either extensive or intensive and either physical or chemical. Extensive properties, such as mass and volume, depend on the amount of matter that is being measured. Intensive properties, such as density and color, do not depend on the amount of matter. Both extensive and intensive properties are physical properties, which means they can be measured without changing the substance"s chemical identity. The freezing point of a substance is a physical property: when water freezes, it"s still water-it"s just in a different physical state. Water can exist in several states, including ice, water, and water vapor. A chemical property is any of a material"s properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance"s chemical identity. Chemical properties cannot be determined just by viewing or touching the substance; the substance"s internal structure must be affected for its chemical properties to be investigated.
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