Bonding Flashcards
(26 cards)
Ionic compounds are always formed from …..
Metal and a non metal
What overall are metal ions charge ?
Positive
What is the general non metal ion charge
Negative
What is O I L R I G
Oxidation Is Loss Reduction Is Gain
What are :
Hydrogen ions
Lithium ions
Sodium ions
H+
Li+
Na+
Potassium ion
Chloride ions
Sulphide ion
K+
Cl-
S2-
Carbonate ion
CO(3) 2-
Sulfate ion
SO(4)2-
Nitrate ion
NO(3)-
Hydroxide
OH-
explain dot and cross diagrams
Sorry no pictures ?? go look it up in your book you whorreee
What is ionic bonding?
A strong electrostatic attraction between oppositely charged ions
Characteristics of ionic compounds ?
- high boiling point and melting point as strong electrostatic forces
- conductive in solutions
What is covalent bonding ?
A shared pair of electrons between two non metal atoms . They achieve a full outer shell by sharing the electrons. They are attracted to the others nuclei
Set definition of covalent bonding
A strong attraction between the bonding pair of electrons and the nuclei involved in the atoms of the bond
Dot and cross diagrams in covalent bonds
Look it up biatch i aint your dictionary
What are the two categories that substances with covalent bonds fall into ?
1) giant covalent
2) simple molecules
Why do substances with simple molecular structures have low melting points ?
Strong covalent bonds however weak intermolecular forces
Why dont simple molecular structures conduct ?
No free flowing electrons or ions
What are giant covalent lattices ?
Structures in which all atoms are connected by covalent bonds
Examples of giant covalent lattices
- diamonds
- graphite
Characteristics of giant covalent lattices
- very high boiling points
- sometimes conduct … Graphite
What is the structure of a metal
A giant structure of positive ions surrounded by a sea of delocalised electrons
Characteristics of metals ?
Conductive due to delocalised electrons
Layers of ions can slide so they are malleable and ductile
Butttt strong bonds mean they dont melt easily
