Ionic Bonding

Question 1

When atom lose electrons….

Answer 1

positive ions/ cations are formed
e.g. Na+, Mg2+

Question 2

When atom gain electrons….

Answer 2

negative ions/anions are formed
e.g. O2-, Cl-

Question 3

Define ionic bonds

Answer 3

strong electrostatic forces of attraction between positive and negative ions

Question 4

Giant Lattice structures of ionic compounds

Answer 4

3 dimensional network of ions
ions held in place by ionic bonds
ions packed in regular and repeating pattern
structure held together tightly due to strong attraction of oppositely charged ions

Question 5

Physical properties of Ionic compounds:
THERES 3

Answer 5

1. HIGH MELTING AND BOILING PTS:
   since the forces of attraction between oppositely charged ions are strong, large amt of heat energy required to overcome the forces to melt the compound
2. SOLUBLE IN WATER, INSOLUBLE IN ORGANIC COMPOUNDS
3. CONDUCT ELECTRICITY WHEN MOLTEN/AQ

Question 6

Why ionic compounds conduct electricity when molten or dissolved in water?

Answer 6

free moving ions / electrons are required to conduct electricity. In aqueous, cations and anions are free to move and available to conduct electricity.