[verb] To express something in terms of a number value, measurement, or amount.

• Appears in modules:

• Comparison in Scientific Research
• Description in Scientific Research
• Diffusion I
• Experimentation in Scientific Research
• Measurement
• Statistics in Science
• Temperature
• The Nitrogen Cycle
• The Process of Science
• Uncertainty, Error, and Confidence
• Using Graphs and Visual Data in Science

[verb] The application of only certain, specific values to systems, thus allowing only certain, discrete magnitudes to be associated with them.

• Appears in modules:

• Atomic Theory II
• Atomic Theory III

[noun] The mathematical model that describes the behavior of subatomic particles, beyond classical particle models, by incorporating the quantization of energy and wave-particle duality. A quantum is a fixed amount of energy absorbed or released during an exchange of radiation. Quantum exchanges are often associated with the transition of particles such as electrons between an excited and ground state.

• Appears in modules:

• Atomic Theory I
• Atomic Theory II
• Atomic Theory III
• Chemical Bonding
• Uncertainty, Error, and Confidence

[noun] A set of four numbers that are commonly used to describe the position of an electron within an atom. These include: n, the principal quantum number; l, the angular or azimuthal quantum number; m, the magnetic quantum number; and s, the electron spin quantum number.

• Appears in modules:

• Atomic Theory III
• Atomic Theory IV

[noun] A common mineral compound made of silica.

• Appears in modules:

• Defining Minerals
• Meselson and Stahl
• Properties of Minerals
• Properties of Solids
• Scientists and the Scientific Community
• The Silicate Minerals