Basic Properties:

* Color: The way a substance appears to the eye.

* Odor: The smell of a substance.

* Texture: How a substance feels to the touch (rough, smooth, sticky, etc.).

* Density: The mass of a substance per unit volume.

* Melting point: The temperature at which a solid turns into a liquid.

* Boiling point: The temperature at which a liquid turns into a gas.

* Solubility: The ability of a substance to dissolve in another substance.

More Advanced Properties:

* Conductivity: The ability of a substance to conduct heat or electricity.

* Viscosity: The resistance of a fluid to flow (e.g., honey is very viscous).

* Hardness: The resistance of a solid to scratching or indentation.

* Malleability: The ability of a solid to be hammered or pressed into different shapes without breaking.

* Ductility: The ability of a solid to be drawn into a wire.

* Luster: The way a substance reflects light (shiny, dull, etc.).

* Magnetism: The ability of a substance to be attracted or repelled by a magnet.

Important Note: Physical properties can be observed and measured without changing the chemical composition of the substance.