There are two types of properties of matter:
Physical Properties: Physical properties are properties that can be observed or measured without changing the substance into another substance.
For example, imagine that you would like to measure the mass of an object made out of copper. After you measure the mass of the object, you can observe that it is still made out of copper. The act of measuring the physical property of mass did not result in a change in the composition of the object.
Other examples of physical properties include volume, density, and color.
Chemical Properties: Chemical properties are properties whose observation or measurement results in a change in the composition of the substance.
For example, if you want to observe the flammability of a substance, you will need to set it on fire. Burning a substance causes it to become a different substance. Therefore, flammability is a chemical property because the act of observing a substance burning changes it into another substance.
Other examples of chemical properties include reactivity with water, reactivity with acid, and corrosiveness.