Ionic and covalent bonding- Yr 9

What is an anion?

A negatively charged ion

What is a cation?

A positively charged ion

How do you know if an ion isn’t stable?

The outer shell isn’t complete

How do you bond two ions together?

Why do ions have brackets around them with a -1?

It shows they have gained an electron, so that electron has given it a negative charge. Hence the -1

Why do ions have brackets around them with a +3?

The + shows it has lost something negative, so it regains a positive charge. Hence the +3

What is covalent bonding?

When atoms share pairs of electrons

What are 2 things that must happen in a covalent bond?

Must be between non-metal atoms

Always two atoms in one shared bond

What is an ionic bond?

A bond between metals and non- metals

How do you draw a covalent bond?