PSSA Grade 8 Science Practice Questions - Pennsylvania System Of School Assessment (PSSA) Grade 8 Science Exam

Protons are negatively charged in the nucleus, while electrons are positively charged in the electron cloud. Protons are positively charged and neutrons are neutral in the nucleus, while electrons are negatively charged outside the nucleus. Neutrons are positively charged in the nucleus, while protons and electrons are neutral in the outer shells. Electrons and protons are both inside the nucleus with neutral charges, while neutrons orbit outside.