All electrons are charged with a negative charge, -1.
negatively charged
It gains electrons!
It becomes charged. (negatively)
They lose electrons.
Electrons are negatively charged. They cannot be positively charged or neutral.
It then becomes a negatively-charged diamond.
negatively charged
They become positively charged ions.
The same thing happens for both, if the electroscope is positvely charged it attracts electrons to the top and sends protons to the leaves causing them to repel and visaversa with negative.
Cations are formed when elements lose electrons. Then they get positively charged.
an atom loses electrons and becomes positivly charged
Positively charged and negatively charged electrons are exchanged.