Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. ... Examples of physical properties would include freezing, melting, and boiling points, density, mass, and volume. A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.toxicity.
oxidation.
flammability.
heat of combustion.
Extensive properties, such as mass and volume, depend on the amount of matter being measured. Intensive properties, such as density and color, do not depend on the amount of the substance present. Physical properties can be measured without changing a substance's chemical identity.
Qualitative is a measurement of quality. ... You might finish cleaning 100% of the dishes (quantitative measurement), but each one is only 70% clean (qualitative measurement). 40% of the population (quantitative measurement) is 100% sure about who they will vote for (qualitative measurement).
