OSTP Science Grade 8 Practice Questions - Oklahoma School Testing Program - Science, Grade 8 Exam

Protons have a positive charge and neutrons have no charge, both residing in the nucleus; electrons have a negative charge and reside outside the nucleus. Protons have a negative charge and electrons have a positive charge, both residing inside the nucleus; neutrons orbit outside. Electrons have no charge and neutrons have a positive charge, residing in the nucleus; protons orbit outside. All subatomic particles carry a positive charge and are evenly distributed throughout the entire atom.