EVERYDAY SCIENCE

Detailed explanation-1: -Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.

Detailed explanation-2: -A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Detailed explanation-3: -Hardness. The ability to resist being scratched-or hardness-is one of the most useful properties for identifying minerals. Hardness is determined by the ability of one mineral to scratch another. Federick Mohs, a German mineralogist, produced a hardness scale (table 5) using a set of ten standard minerals.

Detailed explanation-4: -Since hardness is related to a physical phenomenon associated with matter, it is not a chemical property but a physical one. Some of the other physical properties of a material are, namely, Colour. Density.

Detailed explanation-5: -Hardness is a physical property.