Pure substances are defined as substances that are made of only one type of atom or only one type of molecule (a group of atoms bonded together). The measure of whether a substance is pure is known as purity.
Each of more than one hundred substances that cannot be chemically broken down into simpler substances and are primary constituents of matter.
A thing that is composed of two or more separate elements; a mixture.
A substance made by mixing other substances together.
A mixture which has uniform composition and properties throughout. For example, air is a homogeneous mixture of gases. A teaspoonful of table salt stirred into a glass of water also makes a homogeneous mixture.
A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties
Suspended solids refers to small solid particles which remain in suspension in water as a colloid or due to the motion of the water.
A homogeneous, noncrystalline substance consisting of large molecules or ultra microscopic particles of one substance dispersed through a second substance.