Shale fracking
Shale is a soft finely stratified sedimentary rock formed
from consolidated mud or clay and can be split easily into
fragile plates. Fracking is the process of injecting fluid
at high pressure into subterranean rocks (shale) so as to
force open existing fissures for oil or gas extraction.
Shale-fracking of natural gas is very popular in these days.
Side-on coordination Co-ordination to a metal center through two adjacent
atoms of a ligand: side-on coordination of CO 2 through the
C and one of the two O-atoms.
Solar spectrum
Ensemble of radiations emitted by sun.
Solar chemistry
Chemical processes driven by solar energy, opposed to
thermal processes powered with fossil-C.
Solar driven
Processes energized with solar radiations.
Solubility
The equilibrium concentration of a non-reactive solute in a
solvent.
Sorbent
A material that can absorb a fluid, in general a gas.
Source of energy
Naturally available material or physical agent that can
provide energy.
Spin (electron)
Rotation of the electron around its own axis, to the left or
right.
Steel slag
Mixture of oxides formed in the production of steel. It may
contain basic or acid oxides, and even trace metals which
can be toxic.
Stretching
Elongation or shortening of the equilibrium distance
typical of two bonded atoms.
Supercritical
State of a gas that does not allow condensation to a liquid.
Sustainable
An ecofriendly process that is durable in time and does not
cause depletion of natural resources.
Symmetric
The similar (two elongations or two shortening) stretching
of two bonds in a triatomic system.
Syngas
Synthesis gas made of a mixture of H 2 and CO, made from
coal, methane, biomass.
T
Thermodynamics A branch of physical-chemistry that deals with the relationship
among heat, temperature, work, and energy. It may be
extended to the relationship among various forms of energy.
Triple point
A point, identified by a particular value of T and P in a phase
diagram, at which the three phases solid, liquid, gas co-exist.
This is a singular point characteristic per each species.
258
Appendix I
Shale is a soft finely stratified sedimentary rock formed
from consolidated mud or clay and can be split easily into
fragile plates. Fracking is the process of injecting fluid
at high pressure into subterranean rocks (shale) so as to
force open existing fissures for oil or gas extraction.
Shale-fracking of natural gas is very popular in these days.
Side-on coordination Co-ordination to a metal center through two adjacent
atoms of a ligand: side-on coordination of CO 2 through the
C and one of the two O-atoms.
Solar spectrum
Ensemble of radiations emitted by sun.
Solar chemistry
Chemical processes driven by solar energy, opposed to
thermal processes powered with fossil-C.
Solar driven
Processes energized with solar radiations.
Solubility
The equilibrium concentration of a non-reactive solute in a
solvent.
Sorbent
A material that can absorb a fluid, in general a gas.
Source of energy
Naturally available material or physical agent that can
provide energy.
Spin (electron)
Rotation of the electron around its own axis, to the left or
right.
Steel slag
Mixture of oxides formed in the production of steel. It may
contain basic or acid oxides, and even trace metals which
can be toxic.
Stretching
Elongation or shortening of the equilibrium distance
typical of two bonded atoms.
Supercritical
State of a gas that does not allow condensation to a liquid.
Sustainable
An ecofriendly process that is durable in time and does not
cause depletion of natural resources.
Symmetric
The similar (two elongations or two shortening) stretching
of two bonds in a triatomic system.
Syngas
Synthesis gas made of a mixture of H 2 and CO, made from
coal, methane, biomass.
T
Thermodynamics A branch of physical-chemistry that deals with the relationship
among heat, temperature, work, and energy. It may be
extended to the relationship among various forms of energy.
Triple point
A point, identified by a particular value of T and P in a phase
diagram, at which the three phases solid, liquid, gas co-exist.
This is a singular point characteristic per each species.
258
Appendix I