C3.2 - Atoms into ions

Question 1

Why do atoms react?

Answer 1

To gain/lose electrons in order to gain a full, stable outer shell

Question 2

covalent bonding meaning

Answer 2

• occurs between non-metals only

- sharing of electrons

Question 3

ionic bonding meaning

Answer 3

• occurs between non-metal + metal

- transferring of electron

Question 4

Ways atoms retain a full outer shell

Answer 4

By:

• covalent bonding
• ionic bonding

Question 5

Ionic bonding explanation:

Answer 5

• as electrons are lost/gained
• the atom then has an overall charge (positive/negative)
• then electrostatic forces bind them together

Question 6

Electrostatic forces

Answer 6

• acts in all directions
• very strong
• occur in ionic compounds