bonding

Question 1

what are the three types of bonding

Answer 1

covalent
metallic
ionic

Question 2

covalent bond

Answer 2

shares an electron (non-metal/non-metal)

Question 3

ionic bond

Answer 3

gives or takes an electron (metal/non-metal)

Question 4

metallic

Answer 4

delocalises electrons (metal/metal)

Question 5

what is a lattice

Answer 5

lattice is a 3d structure that shows the arrangements of an atom

Question 6

what is delocalisation

Answer 6

the valence electrons being able to move freely without being bound to one atom is called delocalisation

Question 7

properties of metallic bonds and why

Answer 7

Metals are good conductors of electricity and heat. The delocalised electrons carry a charge and are able to move through the metal.

Metals are malleable (can be bent or reshaped). The delocalised forces of attraction in the lattice means that when the metals are hit with a hammer they will bend without breaking. The lattice structure can adapt to a new shape.

A lot of energy is required to melt metals and overcome the strong force of attraction between the positive metal atoms and the delocalised electrons. This means that metals have high melting and boiling points.