Which is not an example of matter?

Mass: how much matter is in an object

Volume: how much space an object takes up

Density: how light or heavy an object is for its size

A property that describes a physical characteristic of a substance NOT how it reacts with other substances

Color: the way an object reflects or emits light

Texture: how an object feels

Boiling point: the temperature at which water changes from liquid to gas

Freezing point: the temperature at which water changes from a liquid to a solid.

Flammability: the ability of a substance to burn or ignite, causing fire

Corrosive: the gradual destruction of material during a reaction between substances

Reactivity with acid: how a substance reacts with acids

toxicity: how harmful or poisonous a substance is to living things

Acidity: the amount of acid in a substance (how much a substance will react to give off hydrogen ions)