2.2 Bonding and Properties

Question 1

What are ionic bonding properties?

Answer 1

• high melting and boiling point
• conductivity: electrical and thermal when they have moving charge
• strength and hardness: held together by strong bonds making them strong but if ions align they are also brittle

Question 2

what is ionic bonding?

Answer 2

electrostatic attraction form a lattice and holds together the ionic bonding (+ and -)

Question 3

what are the metallic bonding properties?

Answer 3

• not attached to any one atom; delocalized
• high MP & boiling point
• conductive due to moving charge
• malleable and ductile
• lustrous (shiny - photons of light)

Question 4

what are allotropes?

Answer 4

same element with different structure arrangement

Question 5

covalent network bonding properties and explanation

Answer 5

• high MP: the covalent bonds that hold the atoms together are strong
• non-conductors of electricity in solid and liquid states: there are no charged particles that are free to move throughout the structure
• extremely hard and brittle solids: The bonds are very strong between atoms so it is difficult to scratch, but an impact force disrupts the position of the atoms and causes the network to shatter
• insoluble in water: There is no attraction between the atoms in the network and water molecules