Covalent Bonding Flashcards
1
Q
When does covalent bonding occur?
A
It occurs in non metal elements and compounds.
2
Q
What are the atoms in molecules joined by?
A
Covalent bonds
3
Q
When are covalent bonds formed?
A
Covalent bonds are formed when atoms shair pairs of electrons?
4
Q
What is a molecule
A
It is a substance made up of Non-metal atoms joined by covalent bonds.
5
Q
What structure do covalent substances tend to be?
A
Simple molecules.
6
Q
Evaluate advantages and disadvantages of using a dot and cross diagram to represent molecules
A
Advantage:
- usefull for illustrating position of electrons
- indicates from which atom the bonding electrons comes from
Disadvantages:
- fails to illustrate 3D arrangement of the atoms and electron shells
- doesnt idicate relative sizes of atoms and sub-atomic particles
