Iconic, Metallic & Covalent Bonding Flashcards
How are Ions formed?
By the loss or gain of electrons
What is iconic bonding?
When oppositely charged ions are electrostatically attracted to one another.
What must happen when an ionic compound is formed?
The charges must be balanced to result in an overall neutral charge.
What happens in iconic bonding?
Electrons are transferred from one atom to another.
Describe the giant structure of iconic compounds?
Positive ions are closely compact with negative ions surrounded by each of them.
What type of forces holds an ionic lattice together?
Electrostatic forces.
Describe the properties of iconic compounds
They have high melting & boiling points.
Why do iconic compounds have high melting & boiling points?
Because the electrostatic forces a great deal of heat & energy to break.
Iconic compounds can only conduct electricity when…
Molten or liquid.
What is covalent bonding?
The strong electrostatic attraction between a shared pair of electrons and the nuclei of the bonded atoms.
3 examples of covalently bonded compounds`
Hydrogen chloride, carbon dioxide and water
Properties covalent compounds
Non-conductor of electricity and low melting points
Some Covalent substances have huge numbers of atoms bonded together by a network of covalent bonds. This is called…
A giant covalent structure
What does a metallic bond consist of?
Forces between metal ions and delocalized electrons.
Why do metals conduct electricity?
They have free-moving electrons.
