Physical and Chemical Properties of Matter

Physical and Chemical Properties of Matter

1. Physical propierties of matter

   • Types of physical properties
     • Intensive properties
       • Are properties that do not depend on the amount of matter presented.
     • Extensive properties
       • Are properties that depend on the amount of matter presented.
   • Examples of physical properties
     • Intensive properties
       • color, density, boiling point, melting point, malleability, luster, conductivity
         • Malleability
         • Electrical conductivity
     • Extensive properties
       • volumen, mass, shape, length
         • Volume
         • Mass
   • Physical properties can be observed or measured without changing the identity of the substance.

2. Chemical properties of matter

   • Types of chemical properties
     • It depends to the substance reaction to the presence of: air, water, acid, base, or other chemicals
   • Examples of chemical properties
     • Reactivity, flammability, toxicity, ability to oxidize and heat of combustion
       • Combustion
       • Reactivity
   • Chemical properties describe a substance's ability to change into a new substance with different properties.

3. Differences between physical and chemical properties

   • 1. A physical chance is a temporary change, but a chemical is a permanent change.
     • 2. Generally, physical changes do not involve the production of energy, but chemical changes usually involve the production of energy such as, heat,, light, sound
       • 3. A physical change is easily reversible, but chemical changes are irreversible
         • 4. When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged, but when a substance undergoes a chemical change, its molecular composition changes completely.

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