Examlex
When teaching students with speech and language disorders,the primary role of the classroom teacher is to facilitate the social use of language.
Atom Nucleus
The central core of an atom, containing protons and neutrons, around which electrons orbit.
AC Sinewave
Represents alternating current electricity in a waveform that alternates in a sinusoidal manner, typical of household electrical supply.
Ion
An atom with either an excess or a deficiency of electrons in the valence; a negatively or positively charged particle.
Surplus of Electrons
A condition where there are more electrons than protons in a system, leading to a negative charge.
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