The nature of a substance is determined through various types of observation and testing.
Physical and chemical properties can be used to identify a substance or predict how it will behave.
Molarity
When a metal reacts with oxygen, it forms a metal oxide which is basic in nature. This can be distinguished from a non-metal oxide, which is acidic in nature. This difference in the nature of oxides can be used to identify whether a substance is a metal or non-metal.
Characteristic Property
melting point
The physical properties of a pure substance can be used to identify it. A pure substance is an element or a compound, not a mixture.
A characteristic property of a substance is a unique and specific attribute that is inherent to that substance and helps to identify and distinguish it from others. These properties remain constant regardless of the amount or form of the substance and can be used to determine its identity.
True
Color, odor, taste, and state of matter are not specific enough to uniquely identify a substance, as multiple substances may share these properties.
The density of any substance is constant, we don't control it. However, by finding the density of any substance, it can be used to help identify the substance.
The term "quantity" is used to identify the amount of something. This term signifies the numerical value or measurement of a substance, quantity, or object.
The word DNA is a noun. It is a substance used to identify a person.