Bonnding + Structure Flashcards
1
Q
What is an ion, cation and anion?
A
Ion - electrically charged atom created by loss or gain of electrons
Cation - positive ion
Anion - negative ions
2
Q
Why are giant ionic lattices strong?
A
- many electrostatic forces between particles acting in all directions
3
Q
What determines if a covalent bond is single, double or triple?
A
The amount of electrons that are shared, every 2 electrons shared = 1 line between atoms
4
Q
What is a molecule?
A
Two or more atoms covalently bonded together (can be same or different element)
5
Q
What are non bonding electrons?
A
Electrons that are not shared in a covalent bond
6
Q
What are the properties of of graphine?
A
- flexible
- conducts heat + electricity
- strong
- light
7
Q
What are the properties of diamond?
A
- doesn’t conduct electricity
- hard
- dense
- high melting point
8
Q
What are the limitations of dot and cross diagrams?
A
- not to correct size of atom
- not 3D
9
Q
What are the limitations of ball and stick diagrams?
A
- doesn’t indicate movement of electrons
- gaps between atoms are much smaller
10
Q
What type of bonds do polymers use?
A
Covalent
