Covalent Bonding

Question 1

Where do covalent bonds form?

Answer 1

between pair of non metals

Question 2

How are electrons transferred in a covalent bond?

Answer 2

non metals share some of their outer electrons to form full outer shells

Question 3

What is a molecule?

Answer 3

small group of covalently bonded atoms

Question 4

What force holds covalently bonded atoms together?

Answer 4

electrostatic attraction between nucleus and electrons

Question 5

What are the properties of covalent MOLECULAR structures?

Answer 5

1. low melting point, strong covalent bonds only between atoms - weak attraction between molecules
2. poor conductors of electricity, molecules are neutral - no charged particles

Question 6

What is a dative/co-ordinate bond?

Answer 6

covalent bond in which one atom provides both electrons

Question 7

How are electrons transferred in a dative/co-ordinate bond?

Answer 7

electron acceptor is electron deficient
electron donator donates lone pair

Question 8

How is a dative/co-ordinate bond shown?

Answer 8

by an arrow

Question 9

What properties does Graphite have?

Answer 9

-soft
-conducts electricity
-high melting point
-each carbon forms three single covalent bonds
-trigonal planar

Question 10

What are the properties of Diamond?

Answer 10

-hard
-doesn’t conduct
-high melting point
-4 covalent bonds to each carbon atom
-tetrahedron