Physics A-Level
Charge and neutrality
What Charge and neutrality means in Physics A-Level, as defined for OCR.
Definition of Charge and neutrality
Check what you remember
Read the wording for your board, then hide it and explain Charge and neutrality in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Protons are positively charged, neutrons have no charge and electrons are negatively charged; in a neutral atom the number of electrons equals the number of protons, so the total charge is zero.
Topics that use Charge and neutrality
- The nuclear atom (OCR A-Level)
Related terms
- Atomic and nuclear density
- Atomic and nuclear dimensions
- Atomic structure
- Evidence from scattering
- Force-separation relationship
- Isotopes
- Nuclear notation
- Nuclear radius
Using Charge and neutrality in the exam
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