1. Matter and its Changes
Properties of Matter

2. Two Vocabulary Words
Intrinsic – refers to a description of a system that is inherent to the substance in that system. These are nature-given characteristics.
Extrinsic – refers to a description that is dependent on the amount of the substance in the system. These are not nature-given characteristics.

3. Properties :
Nature-given characteristics of a material that enable us to identify, distinguish, and separate that substance from other substances.
Chemistry defines chemical properties, physical properties and a set of descriptions that are NOT properties.

4. Physical Properties
These are characteristics of a pure substance as it “sits alone”. There is no discussion of whether the substance will chemically interact with another substance.
A list of physical properties is presented on the next slide.

5. Physical Properties : Color Odor Texture Taste Hardness Melting Point
Boiling Point
Crystal Structure
Density
Electrical Conductivity
Ductility
Malleability
Luster
Magnetic Permeability

6. Chemical Properties
These are observed behaviors of a pure substance that describe the chemical interaction of that substance with another substance.
This differs from the physical properties in that the substance is no longer “alone”.

7. Chemical Properties : Reactivity in :
Air
Water
Acids
Some other substance
Solubility : Whether one substance may be dissolved in another substance.

8. Not Properties : Size, Volume Mass, Weight Length, Width, Height Shape
Temperature
Phase
These descriptions do not enable us to identify, distinguish, or separate based on chemical identity

9. Questions:
Are physical properties intrinsic or extrinsic? Be able to justify your answer.
Are chemical properties intrinsic or extrinsic? Be able to justify your answer.