C2.2.3 - Forming ions Flashcards
1
Q
What are ions?
A
Electrically charged particles formed when an atom, or group of atoms loses or gains electrons
2
Q
What happens when metal atoms lose electrons?
A
They form positive ions
3
Q
What happens when non-metal atoms gain electrons?
A
They form negative ions
4
Q
What is an electron diagram?
A
A model of an atom or ion in which shells are represented by circles, and electrons by dots or crosses
