Substance

Pure Substance Pure means that only one substance is present in the material and can be a pure element or compound. A simple physical test for purity, and properties that can help identify a substance, is to measure the boiling point or melting point. Every pure substance melts and boils at a fixed temperature.   […]

CLASSIFICATION OF SUBSTANCES  Matter Matter can be classified as either a mixture or a pure substance. Mixtures contain at least two substances. If you can see the different parts of the mixture it is called a mixture.E.g. Soil and concrete   Properties of mixtures depend on the proportions of the parts. Have you ever made