Janelle is observing Physical properties.
Why?
The properties of matter can be classified as follows:
- Extensive and Intensive: Extensive properties depend on the amount of matter involved in the measuring (e.g. mass), and intensive properties do not depend on the amount of matter (e.g. density, conductivity).
- Physical and Chemical: Physical properties do not involve a change in the nature of the substance that is being measured (e.g. color, length), while Chemical properties involve a change in the nature of the substance when they are measured (e.g. reactivity).
The properties that Janelle observed are: Color (intensive, physical), mass (extensive, physical), heat conductivity (intensive, physical), and electrical conductivity (intensive, physical). All these properties are Physical properties.
Have a nice day!
