U8 - Ionic + electrovalent bonds

Question 1

How do atoms become more stable

Answer 1

they bond with other atoms to become more stable by filling their outer shells

Question 2

How do atoms fill their outer shells

Answer 2

loose or gain electrons (Ionic)
share electrons (covalent)

Question 3

Difference between cation and an anion

Answer 3

Cation - positively charged ion
Anion - negatively charged ion

Question 4

How are cations formed

Answer 4

atoms transfer electrons from outer shell to another atom
Metal looses outer shell = becomes positive

Question 5

When is it a cation and an anion

Answer 5

cation- when metal looses electron
anion- when non-metal gains electron

Question 6

How are anions formed

Answer 6

when atoms gain electrons to fill their outer shell

Question 7

Def: Ionic bonding

Answer 7

transfer of electrons from metal atoms to non-metal atoms

Question 8

What holds ionic crystal lattices together

Answer 8

electrostatic attraction between oppositely charged particles hold the ions togeter

Question 9

Properties of ionic compounds

Answer 9

• Hard brittle solids, having
• High melting and boiling points
• Do not conduct electricity in the solid state, but will conduct electricity
  when melted or dissolved

Question 10

explain lattice structure of sodium chloride:

Answer 10

each sodium ion is surrounded by six chloride ions and each chloride ion is surrounded by six sodium ions