Broad General Education

Topics

S1 Physics

S2 Physics

Sentence Completion

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Normally there are numbers of electrons and protons in an atom.
The protons are charged.
The are negatively charged.
The have no charge.
The atom is usually , which means it has no overall charge.
The electrons are much than the neutrons or protons and can from the atom.
When electrons escape the atom becomes charged.
If an atom gains extra electrons then it becomes charged.