According to Purdue's Department of Chemistry, a solid is matter that retains a fixed volume and shape. Particles in a solid are rigid and locked in place. More » Science Chemistry States of Matter

Solids hold their shape and have a fixed volume. The molecules in solids are packed closely together and cannot be moved. Solids also have slow diffusion and low vapor pressure. More »

Solid mensuration is another name for solid geometry, which is a field in mathematics where measurements of three-dimensional shapes are studied. Length, width and height are the three most important measurements in soli... More »

Properties of matter, defined by Education Portal, are divided into two groups: physical properties that include color, density, mass, boiling point, volume, solubility, malleability and temperature; and chemical propert... More »

The physical properties of matter are quantifiable and observable traits of the material that can be measured, without changing the composition of the matter. Appearance, texture, color and odor are examples of matter ph... More »

The most common state of matter is plasma. Plasma makes up approximately 99 percent of visible matter in the universe, as well as most of what is invisible. More »

A phase change, also known as a phase transition, is a transformation in the physical state of a certain sample of matter. The phrase is most commonly used to describe the transition of a material between solid, liquid, ... More »