Flashcards in Section 3: Bonding - Covalent Bonding Deck (10):
1
In which incident does a covalent bond form?
If two elements have a small difference in electronegativity then a covalent bond will form
2
What happens in a covalent bond?
In a covalent bond two or more atoms share electrons to complete their outer shells , they are able to share electrons as the postive nucleus in each atom attracts the negative electron of the other atom that is being shared in the pair
3
What happens in a double bond?
In a double bond two atoms share two pairs of electrons.
4
What is a simple covalent compound?
A simple covalent compound is made up of lots of individual covalent molecules . In each covalent molecules there are covalent bonds but between covalent molecules there are intermolecular forces and not covalent bonds. Intermolecular forces are much weaker than covalent bonds.
5
Why does a simple covalent compound have low melting and boiling points?
A simple covalent compound has low melting and boiling points because it is held together by intermolecular forces which are weak and thus take little energy to overcome.
6
What is a giant covalent structure (macromolecular structure) ?
A macromolecular structure is a network of atoms each bonded covalently to one another.
7
Name two macromolecular structures
Graphite
Diamond
8
What is another way that coordinate bonding can be referred to as?
Dative covalent bonding
9
What happens in a dative covalent bond?
In a dative covalent bond one atom donate both electrons to the bonding pair.
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