To shield the passage of energy such as heat, sound and electricity
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Category: <span>I</span>
An machine which processes mineral ore by mechanically crushing it between steel plates
Being chemically resistant to dissolution in a particular substance
Referring to ore still in the ground
A form of the same element containing a different number of neutrons in its nucleus, giving that element characteristic properties and atomic weight
A change of state occurring at a fixed temperature
Folding sufficient to bring the limbs in parallel
Radiation that ionizes matter, rather than passing through it or reflecting from it
An exchange of ions between two electrolytes or, between an electrolytic solution and another complex, a process used in the aqueous separation of minerals
Electrically charged particles missing one or more electrons than an atom