Related Clues:

• Particle accelerator particle
• One in an accelerated program?
• Item that's always charged
• Physics class particle
• It may be negative or positive
• K+ or Na+
• Its formula includes a plus or minus
• + or - thing
• Plasma bit
• Particle that may bond
• + molecule, e.g.
• Charged subject in science class?
• What a plus sign may indicate
• Molecule in some ostensibly healthier water
• Na+, e.g.