Which of the following are physical properties?
Mass
Density
Flammability
Rusting
Mass and density are physical properties. Flammability and rusting are chemical properties.
Out of the given options, the physical properties are:
1. Mass: Mass is a measure of the amount of matter in an object. It is a physical property because it can be measured and does not involve any chemical changes.
2. Density: Density is the mass per unit volume of a substance. It is a physical property because it can be measured without any changes in the substance's chemical composition.
Flammability and rusting, on the other hand, are not physical properties but rather chemical properties. Flammability refers to the ability of a substance to burn, which involves a chemical reaction. Rusting is a chemical reaction that occurs when iron or steel is exposed to oxygen and moisture, resulting in the formation of rust.
So, the physical properties are mass and density.